+
+<p>
+ The visible note range in a MIDI track can be controlled in two
+ principle ways: the note scroomer, or the scroll wheel of your
+ mouse.
+<p>
+
+<h2 id="add-new-notes-using-the-mouse">Using the scroomer</h2>
+
+<p>
+ The scroomer offers two kinds of control. You can "grab" it in the
+ middle and move it up or down - this adjusts the absolute note range
+ displayed up or down. Alternatively you can "grab" the top or bottom
+ handle of the scroomer, and move that up or down - this adjusts the
+ extent of the note range displayed.
+
+<figure>
+<img style="width:75%" src="/images/midi-scroomer.png" alt="MIDI scroomer">
+<figcaption>MIDI scroomer</figcaption>
+</figure>
+
+<h2 id="add-new-notes-using-scroll">Using your scroll wheel</h2>
+
+
+<p>
+ Several scroll operations can be used to control the visible note
+ range:
+ <li>In internal edit mode, with no notes selected, unmodified
+ scrolling will move the visible range up and down.</li>
+ <li><kbd class="mod1">scroll</kbd> will increase and decrease the
+ visible range (zoom out and in)</li>
+ <li><kbd class="mod13">scroll</kbd> will expand either the top or
+ bottom of the visible note range (depending on scroll
+ direction). Think of this as "show me higher pitches" or "show me
+ lower pitches".
+</p>