<blockquote>
<p>BTW why did you scale it off the line height not the character width?</p>
</blockquote>
<p>Because Scintilla's filling the rectangle [margin width, line height] with the symbol, and most symbols we use are square, so it's the most efficient use of space.</p>
<blockquote>
<p>Also does SCI_TEXTHEIGHT() include the configurable extradescent/ascent or not?</p>
</blockquote>
<p>Not sure, but my guess would be it's accounting for the whole height the line uses on screen.  But that's and interesting question.</p>

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