diff --git a/photobook.cls b/photobook.cls
index b87cf87..8420a30 100644
--- a/photobook.cls
+++ b/photobook.cls
@@ -26,6 +26,8 @@
 %
 %
 %
+% XXX ASAP: \clearcaption support...
+% XXX add marks -- \ShowMarks{..}
 % XXX unify API -- see CellContent env...
 % XXX make this loadable both as a class and as a package...
 %		\@ifclassloaded{photobook}{<true>}{<false>}
@@ -3858,7 +3860,8 @@
 % XXX place marks in bleed area...
 % XXX do this for all pages... (???)
 \newcommand\ShowMarks[1][1pt]{%
-	% XXX corners...
+	% general...
+	% XXX corners / cut marks...
 	\ifendpaperlayout%
 		% XXX fold...
 	\fi%