diff --git a/repo_to_text/core/__init__.py b/repo_to_text/core/__init__.py
index 2c937c6..bee4437 100644
--- a/repo_to_text/core/__init__.py
+++ b/repo_to_text/core/__init__.py
@@ -1,3 +1,5 @@
+"""This module contains the core functionality of the repo_to_text package."""
+
 from .core import get_tree_structure, load_ignore_specs, should_ignore_file, save_repo_to_text
 
-__all__ = ['get_tree_structure', 'load_ignore_specs', 'should_ignore_file', 'save_repo_to_text'] 
\ No newline at end of file
+__all__ = ['get_tree_structure', 'load_ignore_specs', 'should_ignore_file', 'save_repo_to_text']