Function
Returns a vector of dash patterns with recognizably different appearances.
make-contrasting-dash-patternsn#keyk => dashes
<integer>.
<integer>.
<vector>.
duim-dcsduim-dcs Returns a vector of n dash patterns with recognizably different appearances. If the keyword k is supplied, make-contrasting-dash-patterns returns the kth pattern. If there are not n different dash patterns, an error is signalled.
The argument n represents the number of dash patterns.
The argument k represents the index in the vector of dash patterns indicating the pattern to use.