Adobe Premiere Pro CC v.7.xx - Manual (Page 249)

Using modifier keys with trim tools
Use the Alt (Windows) or Option (Mac OS) modifier key to override normal linked
only select the edit point that is clicked. This technique is useful for setting up a split edit (L or J-cut).
Use the Shift modifier key to add or remove other edit points to the current selection.
You can combine both the Alt (Windows) or Option (Mac OS) key and Shift to ignore linked clip selection while adding or removing other edit
points from the current selection.
Choose Edit > Preferences > Trim (Windows), or Premiere Pro > Preferences > Trim (Mac OS), to set the Allow Selection tool to choose
Rolling and Ripple trims without modifier key. This changes the way that the Ctrl-click (Windows) or Command-click (Mac OS) modifier key
works with the Selection tool. If the preference is checked, then the use of the modifier key is inverted.
Trimming in Timeline gaps
You can select the edit point of an empty gap between clips and use timeline trimming commands.
Regular Trim: This technique works the same as selecting the clip side of the edit point for the opposite direction. For example, selecting a Trim
Out on the right side of an empty gap is equivalent to selecting the Trim In of the adjacent clip.
Rolling Trim: If one side of the edit point is an empty gap then it behaves the same as a regular trim.
Ripple Trim: Trimming the gap would move the edit point and shift all trailing clips. Trimming the gap includes the adjacent clip, in a different
position but with its In point remaining the same.
Trim type context menu
You can also select an edit point (or change the trim type of an existing edit point) by right-
menu that appears. The menu contains the following items:
Ripple Trim In
Ripple Trim Out
Rolling Edit
Trim In
Trim Out
Apply Default Transitions
Select multiple edit points
Multiple selection of edit points is possible, including more than one per track. Use the Shift key with any trim tool to select additional edit points.
You can also drag to select multiple edit points. To select multiple edit points, drag a marquee around a group of clips. A Ripple Out trim type is
always chosen, but can be changed after the selection is made with a keyboard shortcut (Shift-T (Windows), or Ctrl-T (Mac OS).), or select Ripple
Trim In from the context menu.
You cannot drag a marquee around the first edits in the timeline with the Ripple Edit tool, however, you can with the Rolling Edit tool, and then
switch the trim function with the keyboard shortcut (Shift-T (Windows), or Ctrl-T (Mac OS).).
You can select more than one edit point per track, choosing all the edit points within the marquee selection box. Use the Shift modifier key to add
or remove other edit points to the selection. The Program Monitor switches to trim mode automatically as soon as the marquee selection is
complete.
To select multiple edit points at the very beginning of a sequence as a Ripple In edit, drag a marquee around the clips with the Rolling Edit tool,
and then press Shift+T (Windows), or Ctrl+T (Mac OS) to toggle to a Ripple In edit selection.
If there are other edit points selected besides the one that you click, then they all change their type to the selected type. The Apply Default
Transitions menu item applies the current default video or audio transition to each of the currently selected edit point locations.
Keyboard shortcuts for edit point selection
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