Level 2 Help for PAINT

                    OUTPUT data format.

                    VALID = BYTE or HALF.

A border pixel is a pixel whose data number is greater
than or equal to the value specified for the BORDER parameter.
The default BORDER value is 255 for byte-data images and
32767 for halfword-data images.

This option allows borders to be painted over.  For each border pixel
a neighboring region is selected at random, and the data number for
that region is assigned to the pixel.  (The random selection is used
so that this process increases the size of regions in a statistically
balanced way.)  If there are no non-border pixels within five pixels
of the border pixel in the same line, the line above, or the line
below, a zero data number is assigned to the border pixel.

If both the THRESH and PBORD options are used, regions smaller than
the threshold size are assigned the data number for a larger neighboring
region.

If ZEDGE is not specified, regions may have the edge of the image for a border.
If ZEDGE is specified, regions may not have the edge of the image for a border.