Filled contours in Zap: If you set the Transparency slider to a value
above 0, the area enclosed by contours will be drawn with a transparent color
in the Zap Window. Specifically, this will happen with closed contours and
open contours that lie entirely in the plane. Low transparencies are fairly
opaque, so you will generally need values above 50. Select
Draw contour outline also to have the contour lines drawn around the
filled area; if this option is off, lines will be only for the current contour
and other selected contours.
Press Set as Defaults to save all of the properties
controlled in this dialog as defaults for creating new objects. These
defaults are stored in your 3dmod settings.
Press the Restore button to return to the built-in default properties
for new objects, which specify closed contours with no symbol display or other