If multiple Parts have identical Custom Control parameter assignments, the Global Button allows changing those parameters for the multiple Parts simultaneously, using a single Custom Control.

For example, if Patches loaded into Parts 1 and 2 both have Vintage Compressors loaded into their Common FX Racks, and both have Custom Controls assigned to the Compressor power buttons, then enabling the Global Button allows turning both Compressors on and off simultaneously using the Custom Control from either Part’s Main Page.

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