AutoCAD uses AutoLISP for scripting and extension. Its been a significant part of AutoCAD since 1986.<p><a href="http:&#x2F;&#x2F;ronleigh.com&#x2F;autolisp&#x2F;ahistory.htm" rel="nofollow">http:&#x2F;&#x2F;ronleigh.com&#x2F;autolisp&#x2F;ahistory.htm</a>