[magick-users] Handling long coordinate lists with polyline and polygon

[Damien Dunlop]

The -polyline and -polygon graphic primitives are almost identical:

-draw 'polyline x1,y1 x2,y2 ... xn,yn'

The coordinate list can be very long.
 
Is there any way of continuing the list on successive 
lines in a `formatted' way, in similar fashion to using 
the `\' for operator sequences within a command?

Whilst on the topic, the same applies to -annotate.