href="https://en.wikipedia.org/wiki/YAML">Wikipedia</a> has a good introduction
to YAML.</li>
</ol>
</section>

<section id="usage">
<h2>Step-By-Step Usage</h2>
<h3 id="usage-fex">Frequency Excursion</h3>
<p>Version 1.0.0 has a minimal set of features for taking measures of frequency
excursion.  Below is an example sequence for analyzing a single song or set of
songs.  Future versions of TweetyPy will allow for numerous modifications to
this workflow including dynamically raising or lowering the threshold for
inclusion in the calculation, changing the shape and/or orientation of the
eraser tool, moving back through the sequence of songs to repeat measures,
cropping of songs, and entering notes to be saved with each song's data.</p>
<ol>
<li>Start TweetyPy.  Currently a list of wave files can be passed on the command
line.  Dropping files on any desktop icon shoul also work but has not yet been
tested.</li>
<li>Add songs via the <code>File -&gt; Add Songs</code> menu or the <code>Add
Songs</code> toolbar button.  Future versions will also allow dropping files
into the main window.</li>
<li>Move and resize the spectrogram for a song by dragging with the left an
right mouse buttons.</li>
<li>Select <code>Tools -&gt; Eraser</code> or the <code>Eraser</code> toolbar
button to enter erasing mode to remove unwanted points from the highlighted
frequency excursion path.</li>
<li>In eraser mode, erase by clicking and dragging in the spectrogram window.
If you erase too much, there is an undo option (only one level of undo is
available).</li>
<li>When the signal has been appropriately cleaned up, select the <code>Songs
-&gt; Next Song</code> menu or <code>Next Song</code> toolbar button.  Future
versions will allow navigating back to previous songs to repeat or revise
scores.</li>
<li>After the last song has been scored, a save-file dialog will be presented.
Select a location for the output data file.</li>
</ol>
</section>

<section id="config2">
<h2>Advanced Configuration</h2>
<p>Coming soon to upcoming releases.</p>
</section>

excursion use will continue to be added through version 1.3 at which point
frequency excursion should be feature-complete.  Any remaining version 1.X
releases will be for bug fixes or for code-refactoring in preparation of the
additional features to come with the 2.X releases.</p>

<h3>Version 1.0 release (Ain't She Tweet)</h3>
<ol type="i">
<li>complete documentation (configuration)</li>
</ol>
<h3>Version 1.1 release (All a Bir-r-r-rd)</h3>
<ol type="i">
<li>fix ugly toolbar icons on mac</li>
<li>app icon</li>
<li>adjustable eraser size</li>
<li>toolbar position configuration</li>
<li>add save button and remember filename (use as default for next save)</li>
</ol>
<h3>Version 1.2 release (Bad Ol' Putty Tat)</h3>
<ol type="i">