diff --git a/PyTeX/build/build/builder.py b/PyTeX/build/build/builder.py
index 45627a3..0725f18 100644
--- a/PyTeX/build/build/builder.py
+++ b/PyTeX/build/build/builder.py
@@ -122,6 +122,8 @@ class PyTeXBuilder:
                     )
                 )
 
+        #  TODO: give pytex source file some additional building information
+
     def _build(self):
         logger.info("Starting build")
         self.load_pytex_files()
diff --git a/PyTeX/build/build/pytex_file.py b/PyTeX/build/build/pytex_file.py
index 9529b34..5474c0c 100644
--- a/PyTeX/build/build/pytex_file.py
+++ b/PyTeX/build/build/pytex_file.py
@@ -19,6 +19,8 @@ class PyTeXSourceFile:
         self._formatter: Optional[FormatterIF] = None
         self._file_hash: Optional[str] = None
 
+        # TODO: select formatter automatically...?
+
     @property
     def file_hash(self) -> str:
         if self._file_hash is None: