diff --git a/PyTeX/format/auto_format.py b/PyTeX/format/auto_format.py
index 9879064..365ecaa 100644
--- a/PyTeX/format/auto_format.py
+++ b/PyTeX/format/auto_format.py
@@ -8,6 +8,7 @@ from .simple_tex_formatter import SimpleTeXFormatter
 from .dtx_formatter import DTXFormatter
 from .pytex_formatter import PyTeXFormatter
 from .git_version_info import GitVersionInfo
+from .default_macros import get_default_macros
 
 
 def formatter_from_file_extension(
@@ -15,7 +16,8 @@ def formatter_from_file_extension(
         config: Optional[FormattingConfig] = None,
         git_version_info: Optional[GitVersionInfo] = None,
         locate_file_config: bool = True,
-        allow_infile_config: bool = True
+        allow_infile_config: bool = True,
+        default_macros: bool = True,
 ) -> PyTeXFormatter:
     switcher: Dict[str, Type[Union[DTXFormatter, SimpleTeXFormatter, DictFormatter]]] = {
         'dtx.pytex': DTXFormatter,
@@ -29,10 +31,15 @@ def formatter_from_file_extension(
     except:
         raise NotImplementedError
 
-    return switcher[extension](
+    formatter = switcher[extension](
         input_file=input_file,
         config=config,
         git_version_info=git_version_info,
         locate_file_config=locate_file_config,
         allow_infile_config=allow_infile_config
     )
+    if default_macros:
+        formatter.macros = get_default_macros()
+    return formatter
+
+
diff --git a/PyTeX/format/macros.py b/PyTeX/format/macros.py
index 169e977..10d6052 100644
--- a/PyTeX/format/macros.py
+++ b/PyTeX/format/macros.py
@@ -1,24 +1,27 @@
 import re
-from typing import List, Union
+from typing import List, Union, Tuple, Dict
 
 from .constants import *
 from .enums import FormatterProperty, Argument
+from abc import ABC, abstractmethod
 
 
 class MacroReplacement:
     def __init__(
             self,
             replacement: str,
-            format_type: str = '%',
             *args,
-            **kwargs
+            **kwargs,
     ):
+        if 'format_type' in kwargs.keys():
+            self.format_type = kwargs['format_type']
+        else:
+            self.format_type = '%'
         self.replacement: str = replacement
-        self.format_type = '%',
         self.args = args
         self.kwargs = kwargs
 
-    def make_format_args(self, formatter, *call_args):
+    def make_format_args(self, formatter, *call_args) -> Tuple[Tuple, Dict]:
         new_args = []
         for arg in self.args:
             if type(arg) == FormatterProperty:
@@ -38,44 +41,67 @@ class MacroReplacement:
         new_kwargs = {}
         for kw in self.kwargs.keys():
             if type(self.kwargs[kw]) == FormatterProperty:
-                new_kwargs[kw] = getattr(formatter, self.kwargs[kw].value)
+                new_kwargs[kw] = formatter.attribute_dict[self.kwargs[kw].value]
             elif type(self.kwargs[kw]) == Argument:
                 new_kwargs[kw] = call_args[self.kwargs[kw].value - 1]
             elif type(self.kwargs[kw]) == str:
                 new_kwargs[kw] = self.kwargs[kw]
             else:
                 raise NotImplementedError
-        return new_args, new_kwargs
+        return tuple(new_args), new_kwargs
 
     def format(self, formatter, *call_args) -> str:
         args, kwargs = self.make_format_args(formatter, *call_args)
         if self.format_type == '%':
-            if self.args:
+            if self.kwargs:
                 raise NotImplementedError  # Currently, not supported
-            return self.replacement % kwargs
+            return self.replacement % args
         elif self.format_type == '{':
             return self.replacement.format(
-                *args, **kwargs
+                *args, **kwargs, **formatter.attribute_dict
             )
         else:
             raise NotImplementedError
 
 
-class Macro:
+class Macro(ABC):
+    @abstractmethod
     def __init__(self):
         raise NotImplementedError
 
+    @abstractmethod
     def matches(self, line: str) -> bool:
         raise NotImplementedError
 
+    @abstractmethod
     def apply(self, line: str, formatter) -> Union[str, List[str]]:
         raise NotImplementedError
 
 
-class BasicMacro(Macro):
+class SimpleMacro(Macro):
     def __init__(
             self,
-            macroname,
+            macroname: str,
+            macro_replacement: MacroReplacement
+    ):
+        self.macroname = macroname
+        self.macro_replacement = macro_replacement
+
+    def matches(self, line: str) -> bool:
+        return line.find(FORMATTER_PREFIX + self.macroname) != -1
+
+    def apply(self, line: str, formatter) -> Union[str, List[str]]:
+        return line.replace(
+            FORMATTER_PREFIX + self.macroname,
+            self.macro_replacement.format(
+                formatter
+            ))
+
+
+class ArgumentMacro(Macro):
+    def __init__(
+            self,
+            macroname: str,
             num_args: int,
             macro_replacement: MacroReplacement
     ):
@@ -88,6 +114,8 @@ class BasicMacro(Macro):
         ))
 
     def matches(self, line: str) -> bool:
+        if line.find('!!') != -1:
+            pass
         match = re.search(self._search_regex, line)
         if match is None:
             return False
diff --git a/PyTeX/format/tex_formatter.py b/PyTeX/format/tex_formatter.py
index 3777389..01299f7 100644
--- a/PyTeX/format/tex_formatter.py
+++ b/PyTeX/format/tex_formatter.py
@@ -36,7 +36,7 @@ class LineStream:
         self.reserve_lines(pos + 1)
         return self._cached_lines[pos]
 
-    def set_future_line(self, line, pos):
+    def set_future_line(self, pos: int, line: str):
         self.reserve_lines(pos + 1)
         self._cached_lines[pos] = line
 
@@ -94,6 +94,10 @@ class TexFormatter(PyTeXFormatter, ABC):
     def macros(self) -> List[Macro]:
         return self._macros
 
+    @macros.setter
+    def macros(self, macros: List[Macro]):
+        self._macros = macros
+
     def _handle_macro(self, macro: Macro):
         res = macro.apply(
             self.line_stream.current_line(),