Igneus Cad Utilities
The Igneus Cad Utilities is an open source collection of cad commands designed to aid automatic sprinkler system designers. Licensed under the Mozilla Public License, these utilities are free to use by anyone.
The Igneus Cad Utilities adds five commands to your CAD program: fpoptions, trimheads, pipeline, exportSHC, and importSHC. All new commands are programmed entirely in the industry standard AutoLisp computer language. This language is natively supported in many modern CAD programs, such as AutoCad and Intellicad. Additionally, anyone with AutoLisp experience may easily modify these commands to suit their own needs.
So if you are a CAD user - and especially if you are a CAD and SHC user, download and try the Igneus Cad Utilities.