Autoload a LISP routine

Create an icaddoc.lsp at the C:\Program Files\CMS\ CMS IntelliCAD installed program path folder.

Content of icaddoc.lsp:
(load "C:\\Users\\<path>\\<to\\<the lisp routine folder>\\<name of the lisp app>.lsp")

In this case, the custom LISP routine is loaded with every new drawing created or opened.

Another possible option is to set LISPINIT system variable to 2. In this case all drawings will share the same LISP environment (variables, functions etc).