which demonstrates the bug. Then fix the bug, re-run the test suite,
and check everything in.
+* Hacking
+
** Visible changes
Which include serious bug fixes, must be mentioned in NEWS.
+** Translations
+Only user visible strings are to be translated: error messages, bits
+of the .output file etc. This excludes impossible error messages
+(comparable to assert/abort), and all the --trace output which is
+meant for the maintainers only.
+
* Test suite