dd>clears the current selection in a trackbar.</dd>

<dt>SetSel(start, end, redraw = true)</dt>
<dd>sets the starting and ending positions for the current selection</dd>

<dt>GetSelStart()</dt>
<dd>sets the starting position of the current selection</dd>

<dt>GetSelEnd()</dt>
<dd>sets the ending position of the current selection</dd>
</dl>