setlinestyle
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The setlinestyle subroutine selects the mask used for line drawing.
The <mask> argument is a 16-bit number, where each bit represents a
pixel in the line being drawn.
If a bit is 1, the corresponding pixel is set to the color of the
line (the current color). If a bit is 0, the corresponding pixel is
left unchanged. The template is repeated for the entire length of
the line.
The default mask is 0xFFFF (a solid line).
The setlinestyle subroutine does not affect arcs, ellipses, or "pie
slice" wedges.
Return Value
None.
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