2 <effect tag="charcoal" id="charcoal">
4 <description>Charcoal drawing effect</description>
5 <author>Charles Yates</author>
6 <parameter type="constant" name="x_scatter" max="10" min="0" default="2">
7 <name>Horizontal scatter</name>
9 <parameter type="constant" name="y_scatter" max="10" min="0" default="2">
10 <name>Vertical scatter</name>
12 <parameter type="constant" name="scale" max="10" min="0" default="1">
15 <parameter type="constant" name="mix" max="10" min="0" default="0">
18 <parameter type="bool" name="invert" default="0">