![]() What do they do They load on startup of AutoCADThey load in a certain order (listed onThey load in a certain order (listed on previous slide)Some have code in them and some dont (ACADDOC.LSP and ACAD.LSP dont as an example)They reside in the SUPPORT folder Key files and why they matter LSPLoad in orderLoad in orderWhat to mess withWhat not to!What not to!Īll those wacky file names ACAD20XX.LSP (XX is version) (XX is version) p Some advice AutoLISP is still very valid!A HUGE base of LISP code existsA HUGE base of LISP code existsLISP shareware is abundantLISP does many things very easily as y g y ycompared to VB/VBALISP is weak on dialog controlsLISP is weak on graphical interfacesView it as an 80/20 language Some history LISP is an old languageIt was open source (cheap)It was open source (cheap)It made sense for AutoCAD because AutoCAD entitles are listsIt runs without compiling (simple)It made sense at the time (cheap) Some fundamentalsLISP LISt ProcessorEverything is in lists ![]() My background ME degree from Georgia TechAutoCAD user since 1985AutoCAD user since 1985AutoLISP programmer since 1990Cadalyst columnist since 1998Cadalyst columnist since 1998Self confessed computer geekComing to you from Atlanta GA so Coming to you from Atlanta GA so ![]() AutoLISP / Visual LISP - Part 1AutoLISP / Visual LISP Part 1 ![]()
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