you do, since any change can alter the layout.
** Regenerate the pdf versions of the reference cards in etc/refcards/.
+On Debian testing, the packages texlive-lang-czechslovak and
+texlive-lang-polish will let you generate the cs-* and sk-* pdfs.
+The Makefile rules did not work for me, I had to use something like:
+csplain -output-format=pdf cs-refcard
** Ask maintainers of refcard translations to update them.