diff --git a/cpdfmanual.tex b/cpdfmanual.tex
index 68a670c..ec3d515 100644
--- a/cpdfmanual.tex
+++ b/cpdfmanual.tex
@@ -7,6 +7,7 @@
 %Document -utf for JSON and mark -clean-strings as deprecated since can fail to round-trip binary strings which begin with a BOM?
 %Document -composition[-json]
 %Document discourage GhostScript usage, since it can strip data (-gs-malformed, embed missing fonts)
+%Document [ ] pagespecs
 \documentclass{book}
 % Edit here to produce cpdfmanual.pdf, cpdflibmanual.pdf, pycpdfmanual.pdf,
 % dotnetcpdflibmanual.pdf, jcpdflibmanual.pdf jscpdflibmanual.pdf etc.