are displayed). <strong><em>You can change the colour or
shading style used for a feature in the associated alignment by clicking
on its colour box.</em></strong></p>
- <p>
- <strong><em>Selecting alignment columns by feature</em></strong><br>
- <strong>Double-click</strong> a feature to add all the columns where
- that feature is found to the current column selection. <strong>Shift+Double-click</strong>
- will add all the columns where that feature is <strong>not</strong>
- found. You can also find these options in the feature's pop-up menu
- (see below). <br />
- <em>Select columns by feature was added in Jalview 2.8.1</em>
- </p>
+ <p>
+ <a name="selectbyfeature"><strong><em>Selecting
+ alignment columns by feature</em></strong></a><br> <strong>Double-clicking
+ a feature type</strong> allows you to select columns in the alignment that
+ contain (or do not contain) features of that type. If a region of the
+ alignment is currently selected, then only features in the current
+ selection will be searched. The following keys affect the way in which
+ selections are made:
+
+ <ul>
+ <li>Hold down <strong>Alt</strong> to select columns not
+ containing features of a particular type.
+ </li>
+ <li>Hold down <strong>Shift</strong> to add columns to the
+ current selection.
+ </li>
+ <li>Press <strong>Command/Windows key</strong> to toggle column
+ selection state (XOR)
+ </li>
+ </ul>
+ Options are also provided in the feature's pop-up menu (see below).
+ <br />
+ <em>Select columns by feature was added in Jalview 2.8.1</em>
+ </p>
<p><strong><em>Feature settings pop-up menu</em></strong><br>
<strong>Right-click</strong> on a feature to open a pop-up menu that
allows you to sort the alignment or current selection using that feature