diff --git a/makefile-templates/Makefile.misc b/makefile-templates/Makefile.misc
index 4791b05..618eb4d 100755
--- a/makefile-templates/Makefile.misc
+++ b/makefile-templates/Makefile.misc
@@ -96,6 +96,12 @@
 ################################################################################
 #
 # Standard file list variables.
+# Note that anything included in any of these variables (particularly the
+# FILES variables) will cause ALL of the relevant print or web targets to
+# be rebuilt, regardless of whether they are actually prerequisites. This
+# can be slightly annoying if some of the files are only relevant to one
+# target. To avoid this effect, define a custom rule at the bottom of
+# this file.
 #
 # List of images used in the print version as actual content.
 #