It is now possible to temporarily 'mute' and IPO-block or IPO-curve. This functionality has been requested by the Plumiferos team, and is based off Patch #6866 by Juho Vepsäläinen (bebraw).
Usage:
* In the IPO Editor header, there is a toggle button (open/closed eye used for Outliner Visibility restriction) beside the IPO-blocktype menu, when there is an active IPO-block in the IPO Editor.
* In the Action Editor, beside the 'lock' icon for channel protection on Action/Constraint channels, there is the open/closed 'eye' that can be toggled to set the mute status of said channel's IPO-block.
* Also in the Action Editor, you can mute individual IPO-curve channels in a similar manner.
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