2011

■ Prevent AutoLISP Errors When Loading Startup Files on page 100
You can create an acad.lsp file if you regularly use specific AutoLISP routines.
When you start AutoCAD for Mac, it searches the support file search path for
an acad.lsp file. If an acad.lsp file is found, it is loaded into memory.
The acad.lsp file is loaded at each drawing session startup when AutoCAD for
Mac is launched. Because the acad.lsp file is intended to be used for
application-specific startup routines, all functions and variables defined in an
acad.lsp file are only available in the first drawing. You will probably want to
move routines that should be available in all documents from your acad.lsp
file into the acaddoc.lsp file.
The recommended functionality of acad.lsp and acaddoc.lsp can be overridden
with the ACADLSPASDOC system variable. If the ACADLSPASDOC system
variable is set to 0 (the default setting), the acad.lsp file is loaded just once:
upon application startup. If ACADLSPASDOC is set to 1, the acad.lsp file is
reloaded with each new drawing.
The acad.lsp file can contain AutoLISP code for one or more routines, or just
a series of load function calls. The latter method is preferable, because
modification is easier. If you save the following code as an acad.lsp file, the
files mysessionapp1.lsp, databasesynch.lsp, and drawingmanager.lsp are loaded
every time you start AutoCAD for Mac.
(load "mysessionapp1")
(load "databasesynch")
(load "drawingmanager")
Quick Reference
Commands
APPLOAD
Loads and unloads applications and defines which applications to load at
startup.
System Variables
ACADLSPASDOC
Controls whether the acad.lsp file is loaded into every drawing or just the
first drawing opened in a session.
98 | Chapter 7 Introduction to Programming Interfaces