diff --git a/calculate/templates/format/backgrounds_format.py b/calculate/templates/format/backgrounds_format.py
index d87be22..f0d2d8a 100644
--- a/calculate/templates/format/backgrounds_format.py
+++ b/calculate/templates/format/backgrounds_format.py
@@ -19,9 +19,11 @@ class BackgroundsFormat(Format):
 
     def __init__(self, template_text: str,
                  template_path: str,
-                 parameters: ParametersContainer,
-                 datavars: Union[Datavars, NamespaceNode, Variables],
-                 chroot_path: str = "/"):
+                 parameters: ParametersContainer = ParametersContainer(),
+                 datavars: Union[Datavars,
+                                 NamespaceNode,
+                                 Variables] = NamespaceNode("<root>"),
+                 **kwargs):
         self._lines: List[str] = [line for line
                                   in template_text.strip().split('\n') if line]
         self._datavars: Union[Datavars, NamespaceNode, Variables] = datavars
@@ -55,7 +57,6 @@ class BackgroundsFormat(Format):
         if not self._check_source(self._source, target_path, self._mirror):
             return self.changed_files
 
-        print(f"FAKE_CHROOT: {self._fake_chroot}")
         self._magician = ImageMagick(
                           chroot=chroot_path if not self._fake_chroot else "/")
         source_resolution = self._magician.get_image_resolution(self._source)
@@ -276,7 +277,6 @@ class BackgroundsFormat(Format):
         """Метод для получения md5-суммы текущего действия шаблона,
         рассчитываемой из последовательности байтов изображения и списка
         разрешений, в которые данный файл должен быть конвертирован."""
-        print("RESOLUTIONS:", resolutions)
         with open(source, "rb") as source_file:
             md5_object = hashlib.md5(source_file.read())
             for width, height in resolutions:
diff --git a/calculate/templates/format/bind_format.py b/calculate/templates/format/bind_format.py
index 64dcac4..6bda7c6 100644
--- a/calculate/templates/format/bind_format.py
+++ b/calculate/templates/format/bind_format.py
@@ -4,7 +4,6 @@
 # не весь файл -- выдаем ошибку.
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 from pyparsing import originalTextFor, OneOrMore, Word, alphanums, Literal,\
                       ZeroOrMore, Forward, Optional, Group, restOfLine,\
@@ -26,7 +25,7 @@ class BINDFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = []
 
         super().__init__(processing_methods)
diff --git a/calculate/templates/format/compiz_format.py b/calculate/templates/format/compiz_format.py
index abe982a..c63518e 100644
--- a/calculate/templates/format/compiz_format.py
+++ b/calculate/templates/format/compiz_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 from pyparsing import originalTextFor, Literal, Word, printables, OneOrMore,\
                       alphanums, ParseException, restOfLine, Group, Optional,\
@@ -27,7 +26,7 @@ class CompizFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_section_line,
                               self._parse_parameter_line,
diff --git a/calculate/templates/format/contents_format.py b/calculate/templates/format/contents_format.py
index b4a9627..3527ea6 100644
--- a/calculate/templates/format/contents_format.py
+++ b/calculate/templates/format/contents_format.py
@@ -5,11 +5,7 @@ from .base_format import Format, FormatError
 from calculate.utils.files import join_paths
 from pyparsing import Literal, Regex, SkipTo, LineEnd, lineno, LineStart
 from calculate.utils.package import PackageAtomParser, Package, PackageNotFound
-from ..template_engine import ParametersContainer, Variables
-from ...variables.datavars import NamespaceNode
-from ...variables.loader import Datavars
 from fnmatch import fnmatch
-from typing import Union
 from glob import iglob
 
 
@@ -29,8 +25,7 @@ class ContentsFormat(Format):
 
     def __init__(self, template_text: str,
                  template_path: str,
-                 parameters: ParametersContainer,
-                 datavars: Union[Datavars, NamespaceNode, Variables]):
+                 **kwargs):
         self._command_methods = {ADD: self._add_command,
                                  REMOVE: self._remove_command,
                                  MOVE: self._move_command}
diff --git a/calculate/templates/format/dovecot_format.py b/calculate/templates/format/dovecot_format.py
index 7464389..8ae6b4b 100644
--- a/calculate/templates/format/dovecot_format.py
+++ b/calculate/templates/format/dovecot_format.py
@@ -4,7 +4,6 @@
 # документа.
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 from pyparsing import originalTextFor, Literal, Word, printables, alphanums,\
                       ParseException, Regex, Group, Optional, alphas, lineEnd,\
@@ -30,7 +29,7 @@ class DovecotFormat(Format):
                  join_before: bool = False,
                  add_header: bool = False,
                  already_changed: bool = False,
-                 parameters: ParametersContainer = ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_section_start_line,
                               self._parse_include_line,
diff --git a/calculate/templates/format/json_format.py b/calculate/templates/format/json_format.py
index 6858cbd..d572394 100644
--- a/calculate/templates/format/json_format.py
+++ b/calculate/templates/format/json_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 import json
 
@@ -16,9 +15,7 @@ class JSONFormat(Format):
                  template_path: str,
                  ignore_comments: bool = False,
                  join_before: bool = False,
-                 add_header: bool = False,
-                 already_changed: bool = False,
-                 parameters: ParametersContainer = ParametersContainer()):
+                 **kwargs):
         processing_methods: list = []
         super().__init__(processing_methods)
         self._ignore_comments: bool = ignore_comments
diff --git a/calculate/templates/format/kde_format.py b/calculate/templates/format/kde_format.py
index a3513e0..2b3eda8 100644
--- a/calculate/templates/format/kde_format.py
+++ b/calculate/templates/format/kde_format.py
@@ -27,7 +27,7 @@ class KDEFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_section_line,
                               self._parse_parameter_line,
diff --git a/calculate/templates/format/kernel_format.py b/calculate/templates/format/kernel_format.py
index 300be95..b1987ea 100644
--- a/calculate/templates/format/kernel_format.py
+++ b/calculate/templates/format/kernel_format.py
@@ -27,7 +27,7 @@ class KernelFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_parameter_line,
                               self._parse_to_delete_line]
diff --git a/calculate/templates/format/ldap_format.py b/calculate/templates/format/ldap_format.py
index 5e7b737..b7b10c5 100644
--- a/calculate/templates/format/ldap_format.py
+++ b/calculate/templates/format/ldap_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 from pyparsing import originalTextFor, Literal, Word, printables, OneOrMore,\
                       alphanums, ParseException, restOfLine, nums,\
@@ -27,7 +26,7 @@ class LDAPFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_type_line,
                               self._parse_access_line,
diff --git a/calculate/templates/format/openrc_format.py b/calculate/templates/format/openrc_format.py
index 4a3b899..9b014f2 100644
--- a/calculate/templates/format/openrc_format.py
+++ b/calculate/templates/format/openrc_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 from pyparsing import Word, Literal, printables, originalTextFor, OneOrMore,\
                       ParseException, restOfLine, Group, Optional, Regex
@@ -26,7 +25,7 @@ class OpenRCFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_parameter_line,
                               self._parse_to_delete_line]
diff --git a/calculate/templates/format/patch_format.py b/calculate/templates/format/patch_format.py
index 882048d..c75cc3a 100644
--- a/calculate/templates/format/patch_format.py
+++ b/calculate/templates/format/patch_format.py
@@ -3,10 +3,6 @@
 from .base_format import Format
 from calculate.utils.files import Process
 from calculate.templates.format.base_format import FormatError
-from ..template_engine import ParametersContainer, Variables
-from ...variables.datavars import NamespaceNode
-from ...variables.loader import Datavars
-from typing import Union
 from os import path
 
 
@@ -16,8 +12,7 @@ class PatchFormat(Format):
 
     def __init__(self, patch_text: str,
                  template_path: str,
-                 parameters: ParametersContainer,
-                 datavars: Union[Datavars, NamespaceNode, Variables]):
+                 **kwargs):
         self._patch_text = patch_text
         self._cwd_path = '/'
         self._last_level = 0
@@ -28,7 +23,8 @@ class PatchFormat(Format):
         # Предупреждения.
         self._warnings: list = []
 
-    def execute_format(self, target_path, chroot_path='/'):
+    def execute_format(self, target_path: str,
+                       chroot_path: str = '/') -> dict:
         '''Метод для запуска работы формата.'''
         self._cwd_path = target_path
         if not path.isdir(self._cwd_path):
diff --git a/calculate/templates/format/postfix_format.py b/calculate/templates/format/postfix_format.py
index dffa683..b4782f5 100644
--- a/calculate/templates/format/postfix_format.py
+++ b/calculate/templates/format/postfix_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 from pyparsing import Word, Literal, alphanums, originalTextFor, OneOrMore,\
                       ParseException, Group, Optional, printables, Regex
@@ -26,7 +25,7 @@ class PostfixFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_parameter_line,
                               self._parse_to_delete_line]
diff --git a/calculate/templates/format/procmail_format.py b/calculate/templates/format/procmail_format.py
index 4c0bf50..2ee20b7 100644
--- a/calculate/templates/format/procmail_format.py
+++ b/calculate/templates/format/procmail_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 from pyparsing import Word, Literal, alphanums, printables, originalTextFor,\
                       OneOrMore, ParseException, restOfLine, Group, Optional,\
@@ -27,7 +26,7 @@ class ProcmailFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_parameter_line,
                               self._parse_to_delete_line]
diff --git a/calculate/templates/format/proftpd_format.py b/calculate/templates/format/proftpd_format.py
index 4275e3d..acbf0a5 100644
--- a/calculate/templates/format/proftpd_format.py
+++ b/calculate/templates/format/proftpd_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format, FormatError
-from ..template_engine import ParametersContainer
 from jinja2 import Environment, PackageLoader
 from collections import OrderedDict
 from pyparsing import originalTextFor, Literal, Word, printables, Regex,\
@@ -34,7 +33,7 @@ class ProFTPDFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_section_start_line,
                               self._parse_section_end_line,
diff --git a/calculate/templates/format/raw_format.py b/calculate/templates/format/raw_format.py
index 0ddab1f..4ec4fe0 100644
--- a/calculate/templates/format/raw_format.py
+++ b/calculate/templates/format/raw_format.py
@@ -16,7 +16,8 @@ class RawFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 parameters=ParametersContainer(),
+                 **kwargs):
         self.comment_symbol = parameters.comment or ""
         self._before = join_before
 
@@ -36,7 +37,7 @@ class RawFormat(Format):
         sep = ""
         if self._before:
             if (template._document_text
-                and not template._document_text.endswith("\n")):
+               and not template._document_text.endswith("\n")):
                 sep = "\n"
             self._document_text = '{0}{1}{2}'.format(
                                                  template._document_text, sep,
diff --git a/calculate/templates/format/regex_format.py b/calculate/templates/format/regex_format.py
index 5edbfbc..8f08cee 100644
--- a/calculate/templates/format/regex_format.py
+++ b/calculate/templates/format/regex_format.py
@@ -23,7 +23,8 @@ class RegexFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 parameters=ParametersContainer(),
+                 **kwargs):
         processing_methods = OrderedDict()
         super().__init__(processing_methods)
 
diff --git a/calculate/templates/format/samba_format.py b/calculate/templates/format/samba_format.py
index 58706de..a3fc7ca 100644
--- a/calculate/templates/format/samba_format.py
+++ b/calculate/templates/format/samba_format.py
@@ -26,7 +26,8 @@ class SambaFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 parameters=ParametersContainer(),
+                 **kwargs):
         processing_methods = [self._parse_comment_line,
                               self._parse_section_line,
                               self._parse_parameter_line,
diff --git a/calculate/templates/format/world_format.py b/calculate/templates/format/world_format.py
new file mode 100644
index 0000000..b5eda94
--- /dev/null
+++ b/calculate/templates/format/world_format.py
@@ -0,0 +1,161 @@
+# vim: fileencoding=utf-8
+#
+from .base_format import Format
+from calculate.utils.package import (
+    PackageAtomParser,
+    PackageNotFound,
+    PackageAtomError
+    )
+
+from collections import OrderedDict
+from typing import List
+import os
+
+
+class WorldFormat(Format):
+    FORMAT = 'world'
+    EXECUTABLE = False
+
+    _initialized = False
+
+    comment_symbol = '#'
+
+    def __init__(self, document_text: str,
+                 template_path: str,
+                 ignore_comments: bool = False,
+                 add_header: bool = False,
+                 already_changed: bool = False,
+                 chroot_path="/",
+                 **kwargs):
+        processing_methods = []
+        self._atom_parser = PackageAtomParser(chroot_path=chroot_path)
+
+        super().__init__(processing_methods)
+        self._template_name = os.path.basename(template_path)
+        self._action_symbols = ["!!", "!"]
+        self.warnings = []
+
+        if add_header and not ignore_comments:
+            self.header, document_text = self._get_header_and_document_text(
+                                               document_text,
+                                               template_path,
+                                               already_changed=already_changed)
+        else:
+            self.header = ''
+
+        document_text = document_text.strip()
+        if document_text == '':
+            self._document_dictionary = OrderedDict()
+        else:
+            document_lines = self._get_list_of_logic_lines(document_text)
+            self._document_dictionary = self._lines_to_dictionary(
+                                                                document_lines)
+
+    def _lines_to_dictionary(self, document_lines: List[str]) -> OrderedDict:
+        output = OrderedDict()
+        for line in document_lines:
+            action = None
+            for action_symbol in self._action_symbols:
+                if line.startswith(action_symbol):
+                    action = action_symbol
+                    line = line[len(action_symbol):]
+                    break
+
+            name_only = line.split(':')[0]
+            if "/" not in name_only:
+                line = f"{self._template_name}/{line}"
+
+            atom_dict = self._atom_parser.parse_atom_name(line)
+            atom_dict['package_atom'] = (
+                                f'{atom_dict["category"]}/{atom_dict["name"]}')
+            if action == "!!":
+                action = "!"
+                print("WITH EXISTANCE CHECK")
+                try:
+                    self._atom_parser._check_package_existance(atom_dict)
+                    print("PACKAGE WAS FOUND")
+                except (PackageNotFound, PackageAtomError):
+                    print("PACKAGE WAS NOT FOUND")
+                    self.warnings.append(f"package '{line}' not found")
+
+            levels = [atom_dict["category"], atom_dict["name"]]
+            level = output
+            for next_level in levels:
+                if next_level not in level:
+                    level[next_level] = OrderedDict()
+                level = level[next_level]
+            level[atom_dict["slot"]] = action
+        return output
+
+    def join_template(self, template):
+        self._document_dictionary = self._change_categories(
+                                                 template._document_dictionary,
+                                                 self._document_dictionary)
+
+    def _change_categories(self, template: OrderedDict,
+                           original: OrderedDict) -> OrderedDict:
+        for category, names in template.items():
+            if category in original:
+                original_names = original[category]
+            else:
+                original_names = OrderedDict()
+            changed_names = self._change_names(names, original_names)
+
+            if not changed_names:
+                original.pop(category)
+            else:
+                original[category] = changed_names
+
+        return original
+
+    def _change_names(self, template_names: OrderedDict,
+                      original_names: OrderedDict) -> OrderedDict:
+        for name, slots in template_names.items():
+            if name in original_names:
+                original_slots = original_names[name]
+            else:
+                original_slots = OrderedDict()
+            changed_slots = self._change_slots(slots, original_slots)
+
+            if not changed_slots:
+                original_names.pop(name)
+            else:
+                original_names[name] = changed_slots
+
+        return original_names
+
+    def _change_slots(self, template_slots: OrderedDict,
+                      original_slots: OrderedDict) -> OrderedDict:
+        for slot, action in template_slots.items():
+            if slot == "*":
+                if action == "!":
+                    original_slots.clear()
+                continue
+            else:
+                if action == "!" and slot in original_slots:
+                    original_slots.pop(slot)
+                    continue
+                if action is None and slot not in original_slots:
+                    original_slots[slot] = None
+                    continue
+
+        return original_slots
+
+    def _get_document_text(self) -> str:
+        lines = []
+        categories = sorted(self._document_dictionary.keys())
+        for category in categories:
+            names_dict = self._document_dictionary[category]
+            names = sorted(names_dict.keys())
+            for name in names:
+                slots = sorted(names_dict[name].keys())
+                for slot in slots:
+                    slot = '' if slot is None else f":{slot}"
+                    lines.append(f"{category}/{name}{slot}")
+
+        lines.append('')
+        return "\n".join(lines)
+
+    @property
+    def document_text(self) -> str:
+        return "{}{}".format(self.header, self._get_document_text())
diff --git a/calculate/templates/format/xml_gconf_format.py b/calculate/templates/format/xml_gconf_format.py
index 71c3b01..f40e280 100644
--- a/calculate/templates/format/xml_gconf_format.py
+++ b/calculate/templates/format/xml_gconf_format.py
@@ -3,14 +3,12 @@
 from pyparsing import originalTextFor, Literal, Word, printables, OneOrMore,\
                       Optional
 from .base_format import Format, FormatError
-from ..template_engine import ParametersContainer
 from collections import OrderedDict
 try:
     from lxml.etree import Element, SubElement, ElementTree, tostring
 except ImportError:
     from xml.etree.ElementTree import Element, SubElement, ElementTree, \
                                       tostring
-from pprint import pprint
 
 
 class XMLGConfFormat(Format):
@@ -32,7 +30,7 @@ class XMLGConfFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = OrderedDict({'gconf': self._gconf,
                                           'entry': self._entry,
                                           'dir': self._dir,
diff --git a/calculate/templates/format/xml_xfce_format.py b/calculate/templates/format/xml_xfce_format.py
index ab43f7d..bef0ed8 100644
--- a/calculate/templates/format/xml_xfce_format.py
+++ b/calculate/templates/format/xml_xfce_format.py
@@ -1,7 +1,6 @@
 # vim: fileencoding=utf-8
 #
 from .base_format import Format
-from ..template_engine import ParametersContainer
 from pyparsing import originalTextFor, Literal, Word, printables, OneOrMore,\
                       Optional
 from collections import OrderedDict
@@ -31,7 +30,7 @@ class XMLXfceFormat(Format):
                  join_before=False,
                  add_header=False,
                  already_changed=False,
-                 parameters=ParametersContainer()):
+                 **kwargs):
         processing_methods = OrderedDict({'channel': self._channel,
                                           'property': self._property,
                                           'value': self._value,
diff --git a/calculate/templates/template_processor.py b/calculate/templates/template_processor.py
index 5705055..86d47fd 100644
--- a/calculate/templates/template_processor.py
+++ b/calculate/templates/template_processor.py
@@ -1042,7 +1042,8 @@ class TemplateExecutor:
                 parsed_template = template_format(
                                                  template_object.template_text,
                                                  template_object.template_path,
-                                                 ignore_comments=True)
+                                                 ignore_comments=True,
+                                                 chroot_path=self.chroot_path)
                 # Действия для шаблонов не являющихся исполнительными.
                 output_paths = [output_path]
 
@@ -1095,10 +1096,10 @@ class TemplateExecutor:
                         self._chmod_file(save_path, chmod)
             elif template_object.format_class.EXECUTABLE:
                 parsed_template = template_format(
-                                                 template_object.template_text,
-                                                 template_object.template_path,
-                                                 template_object.parameters,
-                                                 self.datavars_module)
+                                         template_object.template_text,
+                                         template_object.template_path,
+                                         parameters=template_object.parameters,
+                                         datavars=self.datavars_module)
                 changed_files = parsed_template.execute_format(
                                                   template_object.target_path,
                                                   chroot_path=self.chroot_path)
diff --git a/calculate/utils/calculateini.py b/calculate/utils/calculateini.py
index d01abb8..54a9933 100644
--- a/calculate/utils/calculateini.py
+++ b/calculate/utils/calculateini.py
@@ -13,9 +13,8 @@ class CalculateIniParser:
 
     def __init__(self):
         self.operations = {"=": self.Define.assign,
-                      "+=": self.Define.append,
-                      "-=": self.Define.remove}
-
+                           "+=": self.Define.append,
+                           "-=": self.Define.remove}
         lbrack = Literal("[")
         rbrack = Literal("]")
 
diff --git a/calculate/utils/package.py b/calculate/utils/package.py
index 89c4261..16cb436 100644
--- a/calculate/utils/package.py
+++ b/calculate/utils/package.py
@@ -587,17 +587,15 @@ class PackageAtomParser:
         '''Метод для разбора значения package, после разбора инициирует
         проверку полученных значений. Возвращает объект PackageAtomName.'''
         self.package_atom = package_atom
-        print(f'value: {package_atom}')
 
         if isinstance(package_atom, str):
             atom_dictionary = self.parse_atom_name(package_atom)
             atom_dictionary['package_atom'] = package_atom
-            print(f'atom_dict: {atom_dictionary}')
         elif isinstance(package_atom, dict):
             atom_dictionary = package_atom
             if 'package_atom' not in atom_dictionary:
                 atom_dictionary['package_atom'] = (
-                     f'{atom_dictionary["category"]}{atom_dictionary["name"]}')
+                    f'{atom_dictionary["category"]}/{atom_dictionary["name"]}')
 
         atom_dictionary = self._check_package_existance(atom_dictionary)
         atom_name_object = PackageAtomName(atom_dictionary)
@@ -1093,7 +1091,6 @@ class Package(metaclass=PackageCreator):
         file_path = self.remove_chroot_path(file_path)
         file_path = self.remove_cfg_prefix(file_path)
         removed = OrderedDict()
-        print(f"REMOVE {file_path} FROM PACKAGE {self.package_name}")
 
         if file_path not in self.contents_dictionary:
             return
diff --git a/pytest.ini b/pytest.ini
index 9fe0046..cabf2b5 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -23,6 +23,8 @@ markers =
     samba: marker for running tests for samba format.
     xml_xfce: marker for running tests for xml xfce format.
     xml_gconf: marker for running tests for xml gconf format.
+    world: marker for running tests for world format.
+    formats: marker for running tests for all formats.
 
     files_utils: marker for running tests for calculate.utils.files module.
     package_utils: marker for running tests for calculate.utils.contents module.
diff --git a/tests/templates/format/test_backgrounds.py b/tests/templates/format/test_backgrounds.py
index 27e2219..121b061 100644
--- a/tests/templates/format/test_backgrounds.py
+++ b/tests/templates/format/test_backgrounds.py
@@ -17,12 +17,14 @@ TMP_BACKUP_DIR = 'tests/templates/format/testfiles/backgrounds/tmp.backup'
 TMP_DIR = 'tests/templates/format/testfiles/backgrounds/tmp'
 
 
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_make_tmp_dir():
     if not os.path.exists(TMP_DIR):
         shutil.copytree(TMP_BACKUP_DIR, TMP_DIR)
 
 
+@pytest.mark.formats
 @pytest.mark.backgrounds
 @pytest.mark.parametrize('case', [
         {
@@ -127,7 +129,8 @@ def test_resize_and_convert_of_different_formats(case):
                                       'stretch': case["stretch"]})
     backgrounds_object = BackgroundsFormat(case["template_text"],
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     changed_files = backgrounds_object.execute_format(target_path)
 
     images_format, resolutions = case["result"]
@@ -152,6 +155,7 @@ def test_resize_and_convert_of_different_formats(case):
     # assert False
 
 
+@pytest.mark.formats
 @pytest.mark.backgrounds
 @pytest.mark.parametrize('case', [
         {
@@ -183,7 +187,8 @@ def test_scretch_parameter(case):
                                       'stretch': case["stretch"]})
     backgrounds_object = BackgroundsFormat(case["template_text"],
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     changed_files = backgrounds_object.execute_format(target_path)
 
     for resolution, result in case["result"].items():
@@ -197,6 +202,7 @@ def test_scretch_parameter(case):
                                                                    int(height))
 
 
+# @pytest.mark.formats
 # @pytest.mark.backgrounds
 # def test_to_create():
 #     target_path = os.path.join(TMP_BACKUP_DIR, "result_13-")
@@ -210,6 +216,7 @@ def test_scretch_parameter(case):
 #     backgrounds_object.execute_format(target_path)
 
 
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_if_template_has_been_already_used__it_will_not_be_reused():
     target_path = os.path.join(TMP_DIR, "result_10-")
@@ -219,12 +226,14 @@ def test_if_template_has_been_already_used__it_will_not_be_reused():
                                       'stretch': False})
     backgrounds_object = BackgroundsFormat("1650x1050\n1024x768",
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     changed_files = backgrounds_object.execute_format(target_path)
     assert not changed_files
 
 
 @pytest.mark.backgrounds_slow
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_if_template_is_using_in_directory_but_other_template_has_been_already_used_for_the_same_image_name__latest_template_will_remove_old_images_and_md5sum_file_and_create_new_ones():
     target_path = os.path.join(TMP_DIR, "result_11-")
@@ -234,7 +243,8 @@ def test_if_template_is_using_in_directory_but_other_template_has_been_already_u
                                       'stretch': False})
     backgrounds_object = BackgroundsFormat("1440x1080\n1280x960",
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     changed_files = backgrounds_object.execute_format(target_path)
     assert not os.path.exists(f"{target_path}1650x1050.png")
     assert os.path.exists(f"{target_path}1440x1080.png")
@@ -249,6 +259,7 @@ def test_if_template_is_using_in_directory_but_other_template_has_been_already_u
 
 
 @pytest.mark.backgrounds_slow
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_if_template_is_using_in_directory_which_contains_md5sum_file_without_any_images__the_template_will_remove_md5sum_file_and_create_new_one_and_images():
     target_path = os.path.join(TMP_DIR, "result_12-")
@@ -258,7 +269,8 @@ def test_if_template_is_using_in_directory_which_contains_md5sum_file_without_an
                                       'stretch': False})
     backgrounds_object = BackgroundsFormat("1440x1080\n1280x960",
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     changed_files = backgrounds_object.execute_format(target_path)
     assert os.path.exists(f"{target_path}1440x1080.png")
     assert os.path.exists(f"{target_path}1280x960.png")
@@ -269,6 +281,7 @@ def test_if_template_is_using_in_directory_which_contains_md5sum_file_without_an
 
 
 @pytest.mark.backgrounds_slow
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_if_template_is_using_in_directory_which_contains_some_image_files_without_md5sum_file__the_template_will_remove_all_images_and_create_new_ones_and_new_md5sum_file():
     target_path = os.path.join(TMP_DIR, "result_13-")
@@ -278,7 +291,8 @@ def test_if_template_is_using_in_directory_which_contains_some_image_files_witho
                                       'stretch': False})
     backgrounds_object = BackgroundsFormat("1440x1080\n1280x960",
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     changed_files = backgrounds_object.execute_format(target_path)
     assert not os.path.exists(f"{target_path}1650x1050.png")
     assert os.path.exists(f"{target_path}1440x1080.png")
@@ -292,6 +306,7 @@ def test_if_template_is_using_in_directory_which_contains_some_image_files_witho
                              f"{target_path}1280x960.png": "N"}
 
 
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_if_template_s_name_parameter_is_the_empty_line_and_its_text_contents_two_or_more_resolution_values__the_output_files_name_will_contains_its_resolutions_only():
     target_path = os.path.join(TMP_DIR, "result_14-")
@@ -302,7 +317,8 @@ def test_if_template_s_name_parameter_is_the_empty_line_and_its_text_contents_tw
                                       'name': ''})
     backgrounds_object = BackgroundsFormat("100x100\n60x60",
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     backgrounds_object.execute_format(target_path)
 
     assert os.path.exists(os.path.join(TMP_DIR, "100x100.jpeg"))
@@ -310,6 +326,7 @@ def test_if_template_s_name_parameter_is_the_empty_line_and_its_text_contents_tw
     assert os.path.exists(os.path.join(TMP_DIR, "md5sum"))
 
 
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_if_template_s_name_parameter_is_the_empty_line_and_its_text_contents_one_resolution_value__the_format_will_raise_FormatError_exception():
     target_path = os.path.join(TMP_DIR, "result_15-")
@@ -320,11 +337,13 @@ def test_if_template_s_name_parameter_is_the_empty_line_and_its_text_contents_on
                                       'name': ''})
     backgrounds_object = BackgroundsFormat("100x100",
                                            "path/to/template",
-                                           parameters, datavars)
+                                           parameters=parameters,
+                                           datavars=datavars)
     with pytest.raises(FormatError):
         backgrounds_object.execute_format(target_path)
 
 
+@pytest.mark.formats
 @pytest.mark.backgrounds
 def test_remove_tmp():
     if os.path.exists(TMP_DIR):
diff --git a/tests/templates/format/test_base.py b/tests/templates/format/test_base.py
index 944183a..7ed972a 100644
--- a/tests/templates/format/test_base.py
+++ b/tests/templates/format/test_base.py
@@ -2,6 +2,7 @@ import pytest
 from calculate.templates.format.base_format import Format
 
 
+@pytest.mark.formats
 @pytest.mark.base
 class TestJoinMethod:
     def test_if_inputs_are_dictionaries_with_string_keys_without_any_action_marks__the_dictionaties_just_merged(self, StringDictionaries):
diff --git a/tests/templates/format/test_bind.py b/tests/templates/format/test_bind.py
index db5b0ce..bd7dde9 100644
--- a/tests/templates/format/test_bind.py
+++ b/tests/templates/format/test_bind.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.bind_format import BINDFormat
 
 
+@pytest.mark.formats
 @pytest.mark.bind
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_compiz.py b/tests/templates/format/test_compiz.py
index 000a1a0..ba8aa80 100644
--- a/tests/templates/format/test_compiz.py
+++ b/tests/templates/format/test_compiz.py
@@ -4,6 +4,7 @@ from calculate.templates.format.compiz_format import CompizFormat
 from pprint import pprint
 
 
+@pytest.mark.formats
 @pytest.mark.compiz
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_contents.py b/tests/templates/format/test_contents.py
index 0524e88..9fa153b 100644
--- a/tests/templates/format/test_contents.py
+++ b/tests/templates/format/test_contents.py
@@ -12,6 +12,7 @@ TESTFILES_PATH = os.path.join(os.getcwd(),
                               'tests/templates/format/testfiles/contents')
 
 
+@pytest.mark.formats
 @pytest.mark.contents
 class TestExecutingFormat:
     def test_copy_testfiles(self):
@@ -56,9 +57,7 @@ sym /etc/dir_3/link_0 -> ../dir_1/file_0 {2}
            int(os.lstat(join_paths(chroot_path,
                                    '/etc/dir_3/link_0')).st_mtime))
 
-        contents_format = ContentsFormat(template_text, '/path/to/template',
-                                         ParametersContainer(),
-                                         NamespaceNode())
+        contents_format = ContentsFormat(template_text, '/path/to/template')
         contents_format.execute_format('target/path', chroot_path=chroot_path)
 
         test_package = Package(test_package_name,
@@ -105,9 +104,7 @@ dir /etc/dir_1
 dir /etc/dir_3
 '''
 
-        contents_format = ContentsFormat(template_text, '/path/to/template',
-                                         ParametersContainer(),
-                                         NamespaceNode())
+        contents_format = ContentsFormat(template_text, '/path/to/template')
         contents_format.execute_format('target/path', chroot_path=chroot_path)
 
         test_package = Package(test_package_name,
@@ -183,9 +180,7 @@ dir /etc/dir_5
 sym /etc/dir_5/link_0 -> ../dir_1/file_0 1601991426
 '''
 
-        contents_format = ContentsFormat(template_text, '/path/to/template',
-                                         ParametersContainer(),
-                                         NamespaceNode())
+        contents_format = ContentsFormat(template_text, '/path/to/template')
         contents_format.execute_format('target/path', chroot_path=chroot_path)
 
         test_package = Package(test_package_name,
diff --git a/tests/templates/format/test_dovecot.py b/tests/templates/format/test_dovecot.py
index 1042a5f..e5abaa8 100644
--- a/tests/templates/format/test_dovecot.py
+++ b/tests/templates/format/test_dovecot.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.dovecot_format import DovecotFormat
 
 
+@pytest.mark.formats
 @pytest.mark.dovecot
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_json.py b/tests/templates/format/test_json.py
index 801b092..d997b86 100644
--- a/tests/templates/format/test_json.py
+++ b/tests/templates/format/test_json.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.json_format import JSONFormat
 
 
+@pytest.mark.formats
 @pytest.mark.json
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameters_and_parameter_blocks__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_kde.py b/tests/templates/format/test_kde.py
index 9acd2a5..ef324ce 100644
--- a/tests/templates/format/test_kde.py
+++ b/tests/templates/format/test_kde.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.kde_format import KDEFormat
 
 
+@pytest.mark.formats
 @pytest.mark.kde
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_kernel.py b/tests/templates/format/test_kernel.py
index e30f925..525bbdd 100644
--- a/tests/templates/format/test_kernel.py
+++ b/tests/templates/format/test_kernel.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.kernel_format import KernelFormat
 
 
+@pytest.mark.formats
 @pytest.mark.kernel
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_ldap.py b/tests/templates/format/test_ldap.py
index af8af03..40518b3 100644
--- a/tests/templates/format/test_ldap.py
+++ b/tests/templates/format/test_ldap.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.ldap_format import LDAPFormat
 
 
+@pytest.mark.formats
 @pytest.mark.ldap
 class TestParsingMethods:
     def test_if_logiclines_method_takes_text_with_lines_that_starts_whit_space_symbols__it_returns_joined_lines(self):
diff --git a/tests/templates/format/test_openrc.py b/tests/templates/format/test_openrc.py
index af35793..b3f0023 100644
--- a/tests/templates/format/test_openrc.py
+++ b/tests/templates/format/test_openrc.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.openrc_format import OpenRCFormat
 
 
+@pytest.mark.formats
 @pytest.mark.openrc
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_patch.py b/tests/templates/format/test_patch.py
index 6711c8a..7228d1d 100644
--- a/tests/templates/format/test_patch.py
+++ b/tests/templates/format/test_patch.py
@@ -1,9 +1,6 @@
 import pytest
 import shutil
 from calculate.templates.format.patch_format import PatchFormat
-from calculate.templates.template_engine import ParametersContainer
-from calculate.variables.datavars import NamespaceNode
-from calculate.utils.files import Process
 from os import path
 import os
 import re
@@ -17,6 +14,7 @@ TEST_ROOT_PATH = os.path.join(os.getcwd(),
                               'tests/templates/format/testfiles/patch/root')
 
 
+@pytest.mark.formats
 @pytest.mark.patch
 class TestExecuteMethods:
     def test_create_testfiles(self):
@@ -33,9 +31,7 @@ class TestExecuteMethods:
         with open(path.join(cwd_path, 'diff_1.patch')) as patch_file:
             patch_text = patch_file.read()
 
-        diff_patch = PatchFormat(patch_text, '/template/path',
-                                 ParametersContainer(),
-                                 NamespaceNode("<root>"))
+        diff_patch = PatchFormat(patch_text, '/template/path')
         output = diff_patch.execute_format(target_path=cwd_path)
         if output:
             for changed_file, change_type in diff_patch.changed_files.items():
@@ -66,9 +62,7 @@ class TestExecuteMethods:
         with open(path.join(patch_path)) as patch_file:
             patch_text = patch_file.read()
 
-        diff_patch = PatchFormat(patch_text, '/template/path',
-                                 ParametersContainer(),
-                                 NamespaceNode("<root>"))
+        diff_patch = PatchFormat(patch_text, '/template/path')
         diff_patch.execute_format(target_path=cwd_path)
 
         for changed_file, change_type in diff_patch.changed_files.items():
diff --git a/tests/templates/format/test_postfix.py b/tests/templates/format/test_postfix.py
index a5ad018..1a01e86 100644
--- a/tests/templates/format/test_postfix.py
+++ b/tests/templates/format/test_postfix.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.postfix_format import PostfixFormat
 
 
+@pytest.mark.formats
 @pytest.mark.postfix
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_procmail.py b/tests/templates/format/test_procmail.py
index ac4b876..7bea33f 100644
--- a/tests/templates/format/test_procmail.py
+++ b/tests/templates/format/test_procmail.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.procmail_format import ProcmailFormat
 
 
+@pytest.mark.formats
 @pytest.mark.procmail
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_proftpd.py b/tests/templates/format/test_proftpd.py
index 9bc8b98..e8cc9b1 100644
--- a/tests/templates/format/test_proftpd.py
+++ b/tests/templates/format/test_proftpd.py
@@ -4,6 +4,7 @@ from calculate.templates.format.proftpd_format import ProFTPDFormat
 from pprint import pprint
 
 
+@pytest.mark.formats
 @pytest.mark.proftpd
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_raw.py b/tests/templates/format/test_raw.py
index 2676318..a123c43 100644
--- a/tests/templates/format/test_raw.py
+++ b/tests/templates/format/test_raw.py
@@ -3,6 +3,7 @@ from calculate.templates.format.raw_format import RawFormat
 from calculate.templates.template_engine import ParametersContainer
 
 
+@pytest.mark.formats
 @pytest.mark.raw
 class TestParsingMethods:
     def test_first(self):
diff --git a/tests/templates/format/test_regex.py b/tests/templates/format/test_regex.py
index cc4cc17..b94ae8a 100644
--- a/tests/templates/format/test_regex.py
+++ b/tests/templates/format/test_regex.py
@@ -3,6 +3,7 @@ from calculate.templates.format.regex_format import RegexFormat
 from calculate.templates.template_engine import ParametersContainer
 
 
+@pytest.mark.formats
 @pytest.mark.regex
 class TestParsingMethods:
     def test_if_input_patch_document_contains_only_regular_expressions_without_any_regex_flags__it_correctly_patches_input_document(self):
diff --git a/tests/templates/format/test_samba.py b/tests/templates/format/test_samba.py
index 51d88b6..9f906dd 100644
--- a/tests/templates/format/test_samba.py
+++ b/tests/templates/format/test_samba.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.samba_format import SambaFormat
 
 
+@pytest.mark.formats
 @pytest.mark.samba
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_world.py b/tests/templates/format/test_world.py
new file mode 100644
index 0000000..87b0d9f
--- /dev/null
+++ b/tests/templates/format/test_world.py
@@ -0,0 +1,199 @@
+import pytest
+from collections import OrderedDict
+from calculate.templates.format.world_format import WorldFormat
+import os
+
+
+CHROOT_PATH = os.path.join(os.getcwd(),
+                           "tests/templates/format/testfiles/world")
+
+
+@pytest.mark.formats
+@pytest.mark.world
+def test_parsing_document():
+    original_text = """www-client/chromium:unstable
+dev-python/pip
+dev-util/cmake
+clementine
+"""
+
+    original_object = WorldFormat(original_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    result_dict = OrderedDict({"www-client":
+                               OrderedDict({"chromium":
+                                           OrderedDict({"unstable": None})}),
+                               "dev-python":
+                               OrderedDict({"pip":
+                                           OrderedDict({None: None})}),
+                               "dev-util":
+                               OrderedDict({"cmake":
+                                           OrderedDict({None: None})}),
+                               "media-sound":
+                               OrderedDict({"clementine":
+                                           OrderedDict({None: None})})})
+    assert original_object._document_dictionary == result_dict
+
+
+@pytest.mark.formats
+@pytest.mark.world
+def test_parsing_template():
+    template_text = """www-client/chromium:stable
+!!www-client/chromium:unstable
+!www-client/chromium
+dev-util/cmake
+alsa-utils
+"""
+
+    template_object = WorldFormat(template_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    result_dict = OrderedDict({"www-client":
+                               OrderedDict({"chromium":
+                                           OrderedDict({"stable": None,
+                                                        "unstable": '!',
+                                                        None: '!'})}),
+                               "dev-util":
+                               OrderedDict({"cmake":
+                                           OrderedDict({None: None})}),
+                               "media-sound":
+                               OrderedDict({"alsa-utils":
+                                           OrderedDict({None: None})})})
+    assert template_object._document_dictionary == result_dict
+
+
+@pytest.mark.formats
+@pytest.mark.world
+def test_parsing_template_with_warning():
+    template_text = """www-client/chromium:stable
+!!www-client/chromium:not_exist
+!www-client/chromium
+dev-util/cmake
+alsa-utils
+"""
+
+    template_object = WorldFormat(template_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    result_dict = OrderedDict({"www-client":
+                               OrderedDict({"chromium":
+                                           OrderedDict({"stable": None,
+                                                        "not_exist": '!',
+                                                        None: '!'})}),
+                               "dev-util":
+                               OrderedDict({"cmake":
+                                           OrderedDict({None: None})}),
+                               "media-sound":
+                               OrderedDict({"alsa-utils":
+                                           OrderedDict({None: None})})})
+    assert template_object.warnings == [
+                           "package 'www-client/chromium:not_exist' not found"]
+    assert template_object._document_dictionary == result_dict
+
+
+@pytest.mark.formats
+@pytest.mark.world
+def test_joining_template():
+    original_text = """www-client/chromium:unstable
+dev-python/pip
+dev-util/cmake
+clementine
+"""
+    template_text = """www-client/chromium:stable
+!!www-client/chromium:unstable
+!www-client/chromium
+dev-util/cmake
+alsa-utils
+"""
+
+    original_object = WorldFormat(original_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    template_object = WorldFormat(template_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    result_dict = OrderedDict({"www-client":
+                               OrderedDict({"chromium":
+                                           OrderedDict({"stable": None})}),
+                               "dev-python":
+                               OrderedDict({"pip":
+                                           OrderedDict({None: None})}),
+                               "dev-util":
+                               OrderedDict({"cmake":
+                                           OrderedDict({None: None})}),
+                               "media-sound":
+                               OrderedDict({"clementine":
+                                            OrderedDict({None: None}),
+                                            "alsa-utils":
+                                            OrderedDict({None: None})})})
+
+    original_object.join_template(template_object)
+    assert original_object._document_dictionary == result_dict
+
+
+@pytest.mark.formats
+@pytest.mark.world
+def test_joining_and_get_text_without_header():
+    original_text = """www-client/chromium:unstable
+dev-python/pip
+dev-util/cmake
+clementine
+"""
+    template_text = """www-client/chromium:stable
+!!www-client/chromium:unstable
+!www-client/chromium
+dev-util/cmake
+alsa-utils
+"""
+    result_text = """dev-python/pip
+dev-util/cmake
+media-sound/alsa-utils
+media-sound/clementine
+www-client/chromium:stable
+"""
+
+    original_object = WorldFormat(original_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    template_object = WorldFormat(template_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    original_object.join_template(template_object)
+    assert original_object.document_text == result_text
+
+
+@pytest.mark.formats
+@pytest.mark.world
+def test_joining_and_get_text_with_header():
+    original_text = """www-client/chromium:unstable
+dev-python/pip
+dev-util/cmake
+clementine
+"""
+    template_text = """www-client/chromium:stable
+!!www-client/chromium:unstable
+!www-client/chromium
+dev-util/cmake
+alsa-utils
+"""
+    result_text = """#-------------------------------------------------------------------------------
+# Modified by Calculate Utilities 4.0
+# Processed template files:
+# /path/to/template/media-sound
+#-------------------------------------------------------------------------------
+dev-python/pip
+dev-util/cmake
+media-sound/alsa-utils
+media-sound/clementine
+www-client/chromium:stable
+"""
+
+    original_object = WorldFormat(original_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH,
+                                  add_header=True)
+    template_object = WorldFormat(template_text,
+                                  "/path/to/template/media-sound",
+                                  chroot_path=CHROOT_PATH)
+    original_object.join_template(template_object)
+    assert original_object.document_text == result_text
diff --git a/tests/templates/format/test_xml_gconf.py b/tests/templates/format/test_xml_gconf.py
index aa07d13..e49f14e 100644
--- a/tests/templates/format/test_xml_gconf.py
+++ b/tests/templates/format/test_xml_gconf.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.xml_gconf_format import XMLGConfFormat
 
 
+@pytest.mark.formats
 @pytest.mark.xml_gconf
 class TestParsingMethods:
     def test_if_input_document_is_simple_gconf_tree__the_format_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/test_xml_xfce.py b/tests/templates/format/test_xml_xfce.py
index 0970f82..d8387be 100644
--- a/tests/templates/format/test_xml_xfce.py
+++ b/tests/templates/format/test_xml_xfce.py
@@ -3,6 +3,7 @@ from collections import OrderedDict
 from calculate.templates.format.xml_xfce_format import XMLXfceFormat
 
 
+@pytest.mark.formats
 @pytest.mark.xml_xfce
 class TestParsingMethods:
     def test_if_input_document_contains_just_few_parameter_lines__the_initialised_object_contains_correct_dictionary(self):
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/dev-python/pip/CONTENTS b/tests/templates/format/testfiles/world/var/db/pkg/dev-python/pip/CONTENTS
new file mode 100644
index 0000000..e69de29
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/dev-python/pip/SLOT b/tests/templates/format/testfiles/world/var/db/pkg/dev-python/pip/SLOT
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/tests/templates/format/testfiles/world/var/db/pkg/dev-python/pip/SLOT
@@ -0,0 +1 @@
+0
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/dev-util/cmake-3.13-r1/CONTENTS b/tests/templates/format/testfiles/world/var/db/pkg/dev-util/cmake-3.13-r1/CONTENTS
new file mode 100644
index 0000000..e69de29
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/dev-util/cmake-3.13-r1/SLOT b/tests/templates/format/testfiles/world/var/db/pkg/dev-util/cmake-3.13-r1/SLOT
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/tests/templates/format/testfiles/world/var/db/pkg/dev-util/cmake-3.13-r1/SLOT
@@ -0,0 +1 @@
+0
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/media-sound/alsa-utils-1.2.2/CONTENTS b/tests/templates/format/testfiles/world/var/db/pkg/media-sound/alsa-utils-1.2.2/CONTENTS
new file mode 100644
index 0000000..e69de29
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/media-sound/alsa-utils-1.2.2/SLOT b/tests/templates/format/testfiles/world/var/db/pkg/media-sound/alsa-utils-1.2.2/SLOT
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/tests/templates/format/testfiles/world/var/db/pkg/media-sound/alsa-utils-1.2.2/SLOT
@@ -0,0 +1 @@
+0
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/media-sound/clementine-1.4.0_rc1/CONTENTS b/tests/templates/format/testfiles/world/var/db/pkg/media-sound/clementine-1.4.0_rc1/CONTENTS
new file mode 100644
index 0000000..e69de29
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/media-sound/clementine-1.4.0_rc1/SLOT b/tests/templates/format/testfiles/world/var/db/pkg/media-sound/clementine-1.4.0_rc1/SLOT
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/tests/templates/format/testfiles/world/var/db/pkg/media-sound/clementine-1.4.0_rc1/SLOT
@@ -0,0 +1 @@
+0
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-88.0.404/CONTENTS b/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-88.0.404/CONTENTS
new file mode 100644
index 0000000..e69de29
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-88.0.404/SLOT b/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-88.0.404/SLOT
new file mode 100644
index 0000000..2bf5ad0
--- /dev/null
+++ b/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-88.0.404/SLOT
@@ -0,0 +1 @@
+stable
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-89.0.211/CONTENTS b/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-89.0.211/CONTENTS
new file mode 100644
index 0000000..e69de29
diff --git a/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-89.0.211/SLOT b/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-89.0.211/SLOT
new file mode 100644
index 0000000..6842dbd
--- /dev/null
+++ b/tests/templates/format/testfiles/world/var/db/pkg/www-client/chromium-89.0.211/SLOT
@@ -0,0 +1 @@
+unstable
diff --git a/tests/templates/test_directory_processor.py b/tests/templates/test_directory_processor.py
index 12159d7..7f2582c 100644
--- a/tests/templates/test_directory_processor.py
+++ b/tests/templates/test_directory_processor.py
@@ -2097,6 +2097,7 @@ def test_backgrounds_format_with_single_resolution():
 
 @pytest.mark.directory_processor
 def test_backgrounds_format_making_no_changes():
+    print("id datavars:", id(datavars))
     datavars.main['cl_template_path'] = os.path.join(CHROOT_PATH,
                                                      'templates_69')