ETC Cobalt Family v7.0.0 - Manual (Page 434)

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Sequences - Section Markers
You can organize the contents of a sequence visually by setting section markers that will provide a
blue heading. In addition to this you can jump between section markers.
The quickest way to apply or remove a section marker is using the context menu (right-click over a
sequence step in the Playback tab).
You can see and set the section markers in the sequence editor as well - in the column at the far right