diff --git a/photobook.cls b/photobook.cls
index 63d30b6..98973d5 100644
--- a/photobook.cls
+++ b/photobook.cls
@@ -2815,6 +2815,7 @@
 \def\foldoutcellwidths{}
 
 
+% XXX might be a good idea to add panel spanning...
 \newcommand\foldoutpagecell[2][1]{%
 	% XXX
 }