Add global or take marks to the timeline to stop or loop playback at specified frames or to highlight frames of interest. Global marks are active in all the takes of the scene, while take marks are only active in takes. The steps for adding a global and take mark are similar.
Global marks display on the timeline with this icon and take marks this icon
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After creating a mark, you can configure it to stop or loop playback as well as name it and change its color.
You can set an action on a mark so that the timeline playback either stops at the mark or loops between the start frame and a mark or between two marks.
The mark displays with a square () to indicate that it now stops playback.
The mark displays with an arrow () to indicate that it now loops the playback.
The mark moves to the new frame.