Add selection undo.

[ardour-manual] / _manual / 04_ardours-interface / 02_basic-gui-operations / 03_selection-techniques.html

diff --git a/_manual/04_ardours-interface/02_basic-gui-operations/03_selection-techniques.html b/_manual/04_ardours-interface/02_basic-gui-operations/03_selection-techniques.html
index 770903e2b09c302b284620a5125a7f9a4c83fc8e..cf569ed2a14f45d13d50221a112b5fc600205770 100644 (file)
--- a/_manual/04_ardours-interface/02_basic-gui-operations/03_selection-techniques.html
+++ b/_manual/04_ardours-interface/02_basic-gui-operations/03_selection-techniques.html
@@ -2,16 +2,56 @@
 layout: default
 title: Selection Techniques
 ---                        
-
-
   
-  <p>Ardour follows the conventions used by most other computer software (including other DAWs) for selecting objects in the GUI.</p>
+<p>
+  Ardour follows the conventions used by most other computer software
+  (including other DAWs) for <dfn>selecting objects</dfn> in the 
+  <abbr title="Graphical User Interface">GUI</abbr>.
+</p>
+
 <h2>Selecting individual objects</h2>
-<p>Clicking on object (sometimes in a particular part of its on-screen representation) will select the object, and deselect other similar objects.</p>
+<p>
+  Clicking on an object (sometimes on a particular part of its
+  on-screen representation) will select the object, and deselect other
+  similar objects.
+</p>
+
 <h2>Selecting multiple (similar) objects</h2>
-<p><kbd class="mod1">click</kbd> on an object toggles it selected status, so using <kbd class="mod1">click</kbd> on a series of objects will select (or deselect) each one of them. You can construct completely arbitrary selections with this technique.</p>
+<p>
+  A <kbd class="mod1 mouse">left</kbd> click on an object toggles its 
+  <samp>selected</samp> status, so using <kbd class="mod1 mouse">left</kbd>
+  on a series of objects will select (or deselect) each one of them. You can
+  construct completely arbitrary selections with this technique.
+</p>
+
 <h2>Selecting a range of objects</h2>
-<p>In cases where the idea of "select all objects between this one and that one" makes sense, you can click one object and then Shift click another to select both of them as well as all object in between them. </p>
-<h2>Range Selection</h2>
-<p>These basic principles apply to <a href="/missing">Range Selection</a> - click-drag to select a range, <kbd class="mod1">drag</kbd> to create multiple ranges and shift-click to extend a range to cover a wider area.</p>
-  
+<p>
+  In cases where the idea of "select all objects between this one and that
+  one" makes sense, you can select one object and then click
+  <kbd class="mod3 mouse">left</kbd> on another to select both of them as
+  well as all objects in between.
+</p>
+
+<h2>Time range selection</h2>
+<p>
+  To select a time <dfn>range</dfn> in the Editor,
+  click <kbd class="mouse">Left</kbd> and drag the mouse. 
+  A <kbd class="mod1 mouse">Left</kbd> drag then lets you create other
+  ranges and a <kbd class="mod3 mouse">left</kbd> click extends a range
+  to cover a wider area.
+</p>
+
+<h2>Selection Undo</h2>
+<p>
+  The set of objects (including time range) that are selected at any one 
+  time is known as the selection.
+  Each time you select or deselect an object, the new selection is stored in an
+  undo/redo stack.
+  This stack is cleared each time the content of the timeline changes.
+  If you have built up a complex selection and then accidentally cleared it,
+  choosing <kbd class="menu">Edit &gt; Undo Selection Change</kbd> will restore your
+  previous selection.
+  If you then decide that you had in fact made the correct change, choosing
+  <kbd class="menu">Edit &gt; Redo Selection Change</kbd> will take you back
+  to where you were before you chose <kbd class="menu">Edit &gt; Undo Selection Change</kbd>.
+</p>