diff --git a/Viewer/doc/PROJECT-LAYOUT b/Viewer/doc/PROJECT-LAYOUT
index 011f6c00..95862588 100755
--- a/Viewer/doc/PROJECT-LAYOUT
+++ b/Viewer/doc/PROJECT-LAYOUT
@@ -40,6 +40,8 @@ Basic project layout:
 		MAKE		- Makefile doc, the same as printed
 				  by make help (generated by make doc)
 
+	archive/		- image archive root structure
+
 	experiments/		- standalone experiments
 
 	package.json		- npm/nw configuration