3 title: Which Regions Are Affected?
4 menu_title: Affected Regions
8 This section explains the rules used to decide which regions are affected
9 by editing operations. You don't really have to understand them — hopefully
10 things will Just Work — but it may be useful eventually to understand the rules.
13 Editing operations in Ardour either operate on a single point in time
14 (<kbd class="menu">Split</kbd> being the obvious example) or on two
15 points (which can also be considered to be a range of sorts), <kbd
16 class="menu">Separate</kbd> is a good example of this.
19 Most operations will operate on the currently selected region(s), but if
20 no regions are selected, the region that the mouse is in will be used
21 instead. Single-point operations will generally pick a set of regions to
22 use based on the following rules:
25 <li> If the edit point is `mouse', then
27 <li>if the mouse is over a selected region, or no region, use all selected
29 <li>if the mouse is over an unselected region, use just that region.</li>
32 <li> For all other edit points
35 use the selected regions <em>and</em> those that are both
36 under the edit position <em>and</em> on a selected track,
37 or on a track which is in the same active edit-enabled route group
44 The rationale here for the two different rules is that the mouse edit point
45 is special in that its position indicates both a time and a track; the other
46 edit points (Playhead,Marker) indicate a time only.