3 You may have a situation where you have positioned one region over another,
4 and you just want to cut the lower region so that it directly adjoins both
5 ends of the overlapping one, with no overlaps. To do this, select the upper
6 region, then choose <kbd class="menu">Edit > Separate > Separate
7 Under</kbd>. This will split the lower region so that it no longer overlaps
8 the upper region at all. <br>
9 Here is an example where we start with a short region placed so that it
10 overlaps a longer region:
12 <img src="/images/a3_before_separate_under.png" alt="region arrangement before separate under" />
14 When we perform the <dfn>Separate Under</dfn> edit, the lower region splits
15 in two, with boundaries exactly positioned at the edges of the upper region:
17 <img src="/images/a3_after_separate_under.png" alt="region arrangement after separate under" />
19 If the upper region covers only one end of the lower region, then this
20 operation is equivalent to
21 <a href="@@trimming-regions#trimtonextprevious">Trim to Next or Trim to Previous</a>,
22 depending on which end is covered.