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Works essentially like 'Duplicate Notes', but Duplicates the contained chunks, instead. This feature is helpful for working with musical form.

e.g. chunk1, chunk2

if duplicate chunk=2 chunk1, chunk1, chunk2, chunk2

This differs from repeat, which would: repeat=2 chunk1, chunk2, chunk1, chunk2

It also differs from duplicate notes:

if chunk 1 == ABC and chunk 2 == DEF then duplicate notes chunk 1 chunk 2 would == AABBCCDDEEFF duplicate chunks chunk 1 chunk 2 would = ABCABCDEFDEF