Consistently use TODO for to-dos.
diff --git a/man/CMakeLists.txt b/man/CMakeLists.txt
index c467815..9b2cddf 100644
--- a/man/CMakeLists.txt
+++ b/man/CMakeLists.txt
@@ -79,7 +79,7 @@
INSTALL(FILES ${MAN_PAGE}.${MANFMT} DESTINATION ${MAN_PATH}/man3
RENAME ${MAN_PAGE}.3)
ENDFOREACH(MAN_PAGE ${PROGRAMS})
-# XXX: usually symlinks, but I only know how to do this way
+# TODO: usually symlinks, but I only know how to do this way
INSTALL(FILES zip_error_clear.${MANFMT} DESTINATION ${MAN_PATH}/man3
RENAME zip_file_error_clear.3)
INSTALL(FILES zip_error_get.${MANFMT} DESTINATION ${MAN_PATH}/man3
@@ -128,11 +128,11 @@
#ADD_CUSTOM_TARGET(update-html
# DEPENDS ${HTMLDEPEND})
-# XXX: strange error:
+# TODO: strange error:
#[ 94%] zipcmp.html
#[ 97%] Built target zipcmp.html
#[ 97%] zipmerge.html
#[100%] Built target zipmerge.html
#make: don't know how to make zipcmp.html. Stop
-# XXX: why are all the man pages rebuilt on a second 'make update-html'?
+# TODO: why are all the man pages rebuilt on a second 'make update-html'?
