---
layout: default
-title: What Regions Are Affected?
+title: Which Regions Are Affected?
+menu_title: Affected Regions
---
-
-
-
<p>
- This section explains the rules used to decide what regions are affected
- by editing operations. You don't really have to understand them - hopefully
- things will Just Work - but it may be useful to understand the rules some
- of the time.
+ This section explains the rules used to decide which regions are affected
+ by editing operations. You don't really have to understand them — hopefully
+ things will Just Work — but it may be useful eventually to understand the rules.
</p>
<p>
- Ardour divides operations up into those that operate on a single point
- in time (Split being the obvious example) and those that operate on two
- points (which can also be considered to be a range of sorts), Separate
- is a good example of this.
+ Editing operations in Ardour either operate on a single point in time
+ (<kbd class="menu">Split</kbd> being the obvious example) or on two
+ points (which can also be considered to be a range of sorts), <kbd
+ class="menu">Separate</kbd> is a good example of this.
</p>
<p>
Most operations will operate on the currently selected region(s), but if
no regions are selected, the region that the mouse is in will be used
instead. Single-point operations will generally pick a set of regions to
- use based on the following rules:</p>
-<ol>
- <li> If the edit point is `mouse':
+ use based on the following rules:
+</p>
+<ul>
+ <li> If the edit point is `mouse', then
<ul>
- <li>if the mouse is over a selected region, or no region, use all selected regions.</li>
+ <li>if the mouse is over a selected region, or no region, use all selected
+ regions, or</li>
<li>if the mouse is over an unselected region, use just that region.</li>
</ul>
</li>
<li> For all other edit points
<ul>
<li>
- use the selected regions <strong>and</strong> those that are both
- under the edit position <strong>and</strong> on a selected track,
+ use the selected regions <em>and</em> those that are both
+ under the edit position <em>and</em> on a selected track,
or on a track which is in the same active edit-enabled route group
as a selected region.
</li>
</ul>
</li>
-</ol>
-<p>The rationale here for the two different rules is that the mouse edit point is special in that its position indicates both a time and a track; the other edit points (Playhead,Marker) indicates only a time.</p>
+</ul>
+<p>
+ The rationale here for the two different rules is that the mouse edit point
+ is special in that its position indicates both a time and a track; the other
+ edit points (Playhead,Marker) indicate a time only.
+</p>