I'm having to draw some walkway grills and a couple of flights of stairs and 
have just found the -aatr c (number) option to be used with line steps to 
create any number of stair treads you desire.

Fantastic I thought but the command only seems to work if there are even 
numbers of line points in the polygon. If you have an odd number of points then 
your polygon is rendered as a red outline, which to be honest I think could 
potentially be quite useful for strange man made features.

I like this so I thought I'd share.

https://therion.speleo.sk/wiki/drawingchecklist  details under Man made 


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