GetEnvelopeStateChunk() - meaning of isundo flag?

[nofish]

What does the isundo flag in GetEnvelopeStateChunk() exactly do?
I can't make much sense of the description in the API doc:

Undo flag is a performance/caching hint.

Only reference I found is here, but that's related to GetTrackStateChunk():
https://forum.cockos.com/showthread.php?t=181000

In my use case I'm (only) interested in getting the contained envelope points (specifically of receive envelopes), would there be any performance improvement in setting isundo true/false?

[Meo-Ada Mespotine]

I always use false but only because I don't know better

Best thing would be some benchmark: Use the GetEnvelopeStateChunk-function 10000 times and see, whether it takes longer with true or with false. Would be my naive approach.

[nofish]

Originally Posted by mespotine

Best thing would be some benchmark:

Or maybe a more informative API description as it seems I'm not the only one not getting what it means. :P

[Meo-Ada Mespotine]

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