7 You may have a situation where you have positioned one region over another,
8 and you just want to cut the lower region so that it directly adjoins both
9 ends of the overlapping one, with no overlaps. To do this, select the upper
10 region, then choose <kbd class="menu">Edit > Separate > Separate
11 Under</kbd>. This will split the lower region so that it no longer overlaps
12 the upper region at all.
16 Here is an example where we start with a short region placed so that it
17 overlaps a longer region:
20 <p class="center"><img src="/images/a3_before_separate_under.png" alt="region arrangement before separate under" /></p>
23 When we perform the <dfn>Separate Under</dfn> edit, the lower region splits
24 in two, with boundaries exactly positioned at the edges of the upper region:
27 <p class="center"><img src="/images/a3_after_separate_under.png" alt="region arrangement after separate under" /></p>
30 If the upper region covers only one end of the lower region, then this
31 operation is equivalent to
32 <a href="/editing-and-arranging/change-region-lengths/#trimtonextprevious">Trim to Next/Previous Region</a>, depending on which end is covered.