Hi I have a lisp file that I have included in tools>load>startup suite. as I expect when ever I open AutoCAD this file must be loaded automatically. however when I open the program it doesn't start!!!! the name of the Startup function in the file is ana_startup. after I write (ana_startup) then the command runs and does what it suppose to do. any one knows what the problem is?...why this does not run by itself when I open AutoCad? I also would like to know that in a lisp file how does the compiler knows which function is the main function ( as we use to call it in C++? )