I'm sorry, but that just shows a fundamental lack of understanding of what would be involved. MS would have to know the author's preferred abbreviations of every possible caption label in every supported language. As I'm sure you know, even in English there is more than one possible abbreviation for many words. Since captions can have, not only the default labels, but also user-defined ones, how is a field code supposed to determine which is the correct one? I suspect that's the reason why MS hasn't tried to be more creative than to give you the option of having just the label number and let you use whatever abbreviations you prefer.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]