diff --git a/openpype/host/dirmap.py b/openpype/host/dirmap.py
index 901bbb185c..88d68f27bf 100644
--- a/openpype/host/dirmap.py
+++ b/openpype/host/dirmap.py
@@ -1,3 +1,11 @@
+"""Dirmap functionality used in host integrations inside DCCs.
+
+Idea for current dirmap implementation was used from Maya where is possible to
+enter source and destination roots and maya will try each found source
+in referenced file replace with each destionation paths. First path which
+exists is used.
+"""
+
 import os
 from abc import ABCMeta, abstractmethod