3 Normally, when you trim regions by dragging with the mouse, it affects
4 only the selected regions. Their lengths are directly affected by the
5 trim operation, but nothing else is. Sometimes though, you might like
6 to trim a region that directly adjoins another, and keep this relationship
7 the same—you are not trying to make one of the regions extend
8 over the other—you would like the junction to move in one
9 direction or the other as part of the trim. This requires trimming both
10 regions on either side of the junction, in opposite directions.
11 <dfn>Push/Pull trim</dfn>, activated by pressing shift key before
12 starting the drag, will do just that. Here's a few pictures to show the
13 difference in the results of a normal trim and push/pull trim. First,
14 the initial situation:
16 <img src="/images/a3_before_trim.png" alt="region arrangement before trim" />
18 Here is what happens after we trim the right hand (selected) region by
19 dragging its starting position earlier:
21 <img src="/images/a3_after_trim.png" alt="region arrangement after a trim" />
23 You can see that it now overlaps the earlier region and a crossfade has
24 been created between them.
27 Lets look now at what happens if we do the same trim, but <kbd
28 class="mouse mod3">Left</kbd>-dragging to turn it into a push-pull trim instead:
30 <img src="/images/a3_after_push_trim.png" alt="region arrangement after a push trim" />
32 There is no overlap, and the end of the earlier region has been moved
33 along with the start of the later region, so that they still directly