This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)


is an option for plotting functions that specifies the style in which boundaries of regions should be drawn.
  • The following settings can be used:
Automaticdraw thin black boundary lines
Nonedraw no boundary lines
gdraw with specified graphics directives
  • For 3D graphics, it is also used at the boundary of regions defined by PlotRange.
New in 6