> From: June Kim
> According to the manual at http://www.jsoftware.com/jwiki/Plot/Options
> , penstyle is defined as an index to PENPATTERN defined in plotdefs.
> 
> In ~system\classes\plot\plotdefs.ijs, it is defined as:
> 
> PENPATTERN=: 1 0;12 6;2 4;12 6 2 4;12 6 2 4 2 4
> 
> What does each number mean and how do I customize it?

My untested theory based on memory of previous use:

 * Each box is a line style (that penstyle refers to)
 * Each pair of numbers within a line style represents a length of "drawn" line 
followed by a length of "not-drawn" line.

So the first line style (index 0) is a solid line ("not-drawn" bits are zero 
length). 
The 2nd line style (index 1) has drawn line lengths of 12 interspersed with 
non-drawn line lengths of 6.

Hope that is of some use until you get a more definitive answer.

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