<param name="teeth" type="int" max="9999" gui-text="teeth" gui-description="number of teeth">20</param>
<param name="axle" type="float" precision="2" max="9999" gui-text="axle" gui-description="diameter of the axle">5</param>
<param name="insideout" type="bool" max="9999" gui-text="insideout" gui-description="create a ring gear with the belt being pushed against from within">false</param>
<param name="top" type="float" precision="2" max="9999" gui-text="top" gui-description="overlap of top rim (zero for none)">0</param>
<param name="thickness" type="float" precision="2" max="9999" gui-text="thickness" gui-description="thickness of the material">3.0</param>
<param name="tabs" type="float" precision="2" max="9999" gui-text="tabs" gui-description="width of tabs holding the parts in place in mm (not supported everywhere)">0.0</param>
<param name="debug" type="bool" max="9999" gui-text="debug" gui-description="print surrounding boxes for some structures">false</param>
<param name="reference" type="float" precision="2" max="9999" gui-text="reference" gui-description="print reference rectangle with given length (zero to disable)">100</param>
<param name="burn" type="float" precision="2" max="9999" gui-text="burn" gui-description='burn correction in mm (bigger values for tighter fit). Use BurnTest in "Parts and Samples" to find the right value.'>0.1</param>