</p>
<p>
A MIDI track has the same basic controls as an <a href="@@audio-track-controls">audio track</a>,
- with the addition of two extra elements:
+ with the addition of three extra elements:
</p>
<ol>
<li>Some meters for the track's outputs (MIDI in <span style="color:red;">red</span>,
Audio in <span style="color:green;">green</span>)</li>
- <li>The <dfn>Scroomer</dfn>, a zoom and scroll controller for the midi notes range.</li>
+ <li>The <dfn>Scroomer</dfn>, a zoom and scroll controller for the midi notes range</li>
+ <li>When the track is tall enough, the External MIDI Device selection dropdown appears.</li>
</ol>
<p>
The Scroomer performs a couple of functions:
</p>
<ul>
<li>The scrollbar controls the range of pitches that are visible on the
- track, as visualized by the piano keyboard. Drag the body of the scrollbar up
- and down to display higher or lower pitches.</li>
- <li>Drag the scrollbar handles to zooms in and out and increase and decrease the
- range of visible pitches.</li>
- <li>clicking on the piano plays the corresponding MIDI note for reference.</li>
+ track, as visualized by the piano keyboard. Dragging the body of the scrollbar up
+ and down displays higher or lower pitches.</li>
+ <li>Dragging the scrollbar handles zooms in and out and increases or decreases the
+ range of visible pitches.</li>
+ <li>Double clicking the scrollbar auto-adjusts the zooms to make the range of
+ visible pitches fit the actual content of the track.</li>
+ <li>Clicking on the piano plays the corresponding MIDI note for reference.</li>
</ul>
<p>
A MIDI track's data may span any number of the 16 available MIDI channels, and sometimes it is