ACADLSPASDOC system variable
on_start.lsp for each doc
Specifies whether on_start_default.lsp and on_start.lsp are loaded into every drawing as are on_doc_load.lsp and on_doc_load_default.lsp, or just when the first drawing opens in a session.
Off (0): Do not load on_start.lsp with every drawing
On (1): Load on_start.lsp with every drawing