Create content for Plugin Manager which was previously empty.

_manual/11_working-with-plugins/02_plugin-manager.html

@@ -3,6 +3,57 @@ layout: default
 title: Plugin Manager
 ---
 
+<p>
+  The <dfn>Plugin Manager</dfn> serves two purposes. Primarily it is used to
+  control the display status of plugins. It can also be used to find and insert
+  plugins into the
+  <a href="/working-with-plugins/processor-box/">Processor Box</a>. It is
+  displayed either by a double-click in the <dfn>Processor Box</dfn> or by
+  choosing <kbd class="menu">New Plugin &gt; Plugin Manager...</kbd> from the
+  <dfn>Processor Box</dfn> context menu.
+</p>
 
+<p>
+  Displayed for each plugin is the status (normal, favorite, hidden),
+  name, type, category, creator (author), and the number of audio and MIDI
+  connections. The plugins can be sorted by clicking on a column header.
+</p>
 
+<img src="/files/a4/a4_plugin_manager.png" alt="Plugin Manager window"/>
 
+<h2>Plugin Display Status</h2>
+
+<p>
+  Click on a Fav(orite) or Hide radio button to change a plugin's display status.
+  Clicking on an already selected radio button will cancel it, returning the
+  plugin to the normal display status. Plugins marked as a favorite show up in
+  the <dfn>Processor Box</dfn> context menu under
+  <kbd class="menu">New Plugin &gt; Favorites</kbd>. Setting the hide
+  radio button on a plugin will keep the plugin from showing in the
+  <dfn>Processor Box</dfn> context menus
+  <kbd class="menu">New Plugin &gt; By Creator</kbd> or
+  <kbd class="menu">New Plugin &gt; By Category</kbd>.
+</p>
+
+<h2>Filtering Listed Plugins</h2>
+
+<p>
+  The middle of the <dfn>Plugin Manager</dfn> is used to filter the listed
+  plugins. Typing into the text-box will filter the plugins based on the filter
+  mode selected by drop-down box. Clicking <kbd class="button">Clear</kbd>
+  empties the text-box.
+</p>
+
+<h2>Inserting Plugins in the Processor Box</h2>
+
+<p>
+  The bottom half of the plugin manager shows plugins that have been selected
+  for insertion into the <dfn>Processor Box</dfn>. A plugin can be added by
+  either double clicking the plugin entry in the top half, or, if already
+  selected in top half, by clicking <kbd class="button">Add</kbd>.
+<p>
+
+<p>
+  Plugins can be removed from the bottom half with a double click, or, if
+  already selected, by clicking <kbd class="button">Remove</kbd>.
+</p>