Handy AutoCAD-3. Quick Hatch
Quick Hatch - the FREE set of AutoLISP and VBA commands for quick Hatching in AutoCAD using auto assignment of hatch parameters.
Related link: Hatch Fast - parametrical hatching
The program also includes custom Hatch pattern for adding rail pickets in drawing, which is a time consuming task. Array-copy-trim-extend combination of commands can be replaced with just one hatch command. Area of added pickets is flexible for modifications (associative hatch).
Download program at: http://www.nyacad.com/Download.htm
Other samples (images):
Alex Borodulin 03/30/08