diff --git a/qgis/export.py b/qgis/export.py
index ce2bc10..7bc5315 100644
--- a/qgis/export.py
+++ b/qgis/export.py
@@ -5,6 +5,12 @@ Export layouts from QGIS project to pdf or jpg.
 Each exported map will contain a different combination of EP/type, e.g.
 0.05/'ZSA'
 
+Usage:
+    > export.bat
+
+This script must be run with the version of python installed with QGIS, that
+is why 'export.bat' is required.
+
 D Howe
 d.howe@wrl.unsw.edu.au
 2022-05-17