User Manual

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When a track’s Auto Select control is off, clips on that track are ignored by those same
categories of operations, unless you manually select one or more clips or edit points.
The next three sections go into detail on how the Auto Select buttons help you control the
trimming operations described in this chapter, particularly when it comes to operations that
ripple the Timeline, and the kinds of “playhead-targeted” trim operations described later in this
chapter. For more information on using the Auto Select controls to define selections and control
other editing operations, see Chapter 28, “Editing Basics.
Using Auto Select to Control Which Clips Are Trimmed
One of the principal uses of the Auto Select controls is to let keyboard shortcut-driven editors
choose which specific clips on which tracks will be affected by an operation that would
otherwise affect every superimposed clip at the position of the playhead or encompassed by In
and Out points set in the timeline.
For example, if multiple clips are superimposed in V1, V2, and V3, and A1, A2, and A3, all six
tracks have their Auto Select controls turned on, and you park the playhead over one of them
and use the Trim End command in Selection mode, then all six superimposed clips will
be trimmed.
Trimming all clips at the position of the playhead
However, if you only want to trim the clip in track V3, then you can solo the Auto Select control
of V3 by Option-clicking it, and then when you use the Trim End command, the clip on V3 is the
only one that’s trimmed, the other clips are ignored.
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