I'm trying to convert a floor plan from a double line wall representation to a single line. I'm looking for a lisp that will allow me to create a selection set of parallel lines and draw a line between those lines to make a sinle line representation of a wall. I found a lisp that lets me pick lines 2 at a time (L2.lsp), which works, but I have lot of walls to covert it would help greatly to select more than 1 set of lines at a time.
