+ running OS X, you will see <kbd>Cmd </kbd> where appropriate (for instance
+ in the first example above). On other machines you will see
+ <kbd>Ctrl </kbd> instead.
+</p>
+
+<h3>Mouse Buttons</h3>
+<p>
+ We refer to <a href="/setting-up-your-system/mouse/">mouse buttons</a> as
+ <kbd class="mouse">Left</kbd>, <kbd class="mouse">Middle</kbd> and
+ <kbd class="mouse">Right</kbd>. Ardour can use additional buttons, but they have
+ no default behaviour in the program.
+</p>
+
+<h4>Mouse click modifiers</h4>
+<p>
+ Many editing functions are performed by clicking the mouse while holding a
+ modifier key, for example <kbd class="mouse mod1">Left</kbd>.
+</p>
+
+<h4>Mouse wheel</h4>
+<p>
+ Some GUI elements can optionally be controlled with the mouse wheel when
+ the pointer is hovering over them. The notation for mouse wheel action is
+ <kbd class="mouse">⇑</kbd> <kbd class="mouse">⇐</kbd>
+ <kbd class="mouse">⇓</kbd> <kbd class="mouse">⇒</kbd>.
+</p>
+
+<h4>Context-click</h4>
+<p>
+ The term <dfn>context-click</dfn> is used to indicate
+ that you should (typically) <kbd class="mouse">Right</kbd>-click on a particular element of the graphical
+ user interface. Although right-click is the common, default way to do this, there
+ are other ways to accomplish the same thing - this term refers to any of them,
+ and the result is always that a menu specific to the item you clicked on will be
+ displayed.
+</p>
+
+<h4>"The Pointer"</h4>
+<p>
+ When the manual refers to the "pointer", it means the on-screen representation
+ of the mouse position or the location of a touch action if you are using a touch
+ interface.
+</p>
+
+<h3>Other user input</h3>
+<p>
+ Ardour supports hardware controllers, such as banks of
+ <kbd class="fader">faders</kbd>, <kbd class="knob">knobs</kbd>, or
+ <kbd class="button">buttons</kbd>.