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+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
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+ * This file is part of Jalview.
+ *
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
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+ * of the License, or (at your option) any later version.
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+ * Jalview is distributed in the hope that it will be useful, but
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+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ -->
+<head>
+<title>Sequence Feature Settings Dialog Box</title>
+</head>
+<body>
+ <p>
+ <strong>Sequence Feature Settings Dialog Box</strong>
+ </p>
+ <p>
+ Select <strong>View→Feature Settings...</strong> menu entry in
+ an alignment window to open the feature settings dialog box, which
+ allows you to precisely control the presence and appearance of
+ sequence features for the current alignment.
+ </p>
+ <center>
+ <img src="featureSettings.gif" width="400" height="452"> <br>
+ Sequence Feature Settings for the Jalview Application</img>
+ </center>
+ <p>
+ The top section of the dialog box lists all the sequence feature
+ groups, along with a tickbox for each that controls whether its
+ features are displayed. The table in the middle lists all the
+ features in the currently selected groups, along with their display
+ style and whether they are currently being displayed (only the
+ ticked features and groups 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>
+ <a name="selectbyfeature"><strong><em>Selecting
+ alignment columns by feature</em></strong></a><br> <strong>Double-clicking
+ a feature type</strong> in the <strong>Feature Settings</strong> dialog
+ 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
+ <ul>
+ <li>Hide, show and select columns containing that feature</li>
+ <li>Sort the alignment or current selection using that feature
+ type (see below)</li>
+ <li>Toggle the type of colouring used for the feature</li>
+ </ul>
+ <p>
+ Features may be highlighted with either a single colour or a <a
+ href="featureschemes.html">feature colourscheme</a> based on
+ either the scores associated with that feature or from the feature's
+ description (e.g. to distinguish different names associated with a
+ DOMAIN feature).
+ </p>
+ <p>
+ <strong><a name="sortbyfeature">Ordering alignment by
+ features</a></strong><br> The 'Seq Sort by Score' and 'Seq Sort by
+ Density' buttons will sort the alignment based on the average score
+ or total number of currently active features and groups on each
+ sequence. To order the alignment using a specific feature type, use
+ the <em>sort by ..</em> entries in the pop-up menu for that type.<br>
+ <em>Feature sorting and graduated feature colouring were
+ introduced in Jalview 2.5</em>
+ </p>
+
+ <p>
+ <strong>Transparency and Feature Ordering</strong>
+ </p>
+ <p>It is important to realise that sequence features are often not
+ distinct and often overlap (for example, a metal binding site
+ feature may be attached to one position along a stretch of sequence
+ marked with a secondary structure feature).</p>
+ <p>
+ The ordering of the sequence features in the dialog box list is the
+ order used by Jalview for rendering sequence features. A feature at
+ the bottom of the list is rendered <em>below</em> a feature higher
+ up in the list.<br> <em><strong>You can change
+ the order of a feature by dragging it up and down the list with
+ the mouse (not applet)</strong></em>.
+ </p>
+ <p>
+ The <strong><em>Optimise order</em></strong> button (currently only
+ available in the application) will re-order the feature render
+ ordering based on the average length of each feature type.
+ </p>
+ <p><a name="transparency"></a>
+ The <strong><em>transparency slider setting</em></strong> controls
+ the visibility of features rendered below other features. Reducing
+ the transparency will mean that features at the top of the list can
+ obscure features lower down, and increasing it allows the user to
+ 'see through' the upper layers of a set of features.
+ </p>
+ <p>
+ <strong><em>You can save all features, with their
+ current colours and visibility in a Jalview format file. </em></strong>
+ </p>
+</body>
+</html>
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