I'm wonder why some pages are not translated, too.
It seems they happen randomly, but mostly in whole
of <sect?> block at source files. On Marco's case,
all entries of <sect2 id="gimp-tutorial-quickie-flip">
come to untranslated except its <title>.
In Japanese part, sect1:gimp-concepts-selection,
<title>, the leading subsection, and <indexterm> of sect1:gimp-prefs-dialog,
sect1:gimp-using-script-fu-tutorial (but the API reference is safe),...
and other 36 subsections are untranslated in its whole entries.
These holes are not same with other languages.
In addition gimp-filter-repeat.html, gimp-filter-reset-all.html,
gimp-filter-reshow.html, and gimp-filters-script-fu.html are
included only in de, en, fr, it, ja, and ru. It's also a mystery.
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