The configuration file types.xml
defines
three parameter and attribute types – units, fonts and colors.
<types xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><colors>
<color name="aqua">#00FFFF</color>
<color name="black">#000000</color> </colors> <units>
<unit>cm</unit>
<unit>mm</unit> </units> <fonts>
<font>serif</font>
<font>sans-serif</font> </fonts> </types>