Learn AUTOCAD-AUTOLISP with Real Code Examples

Save .lsp scripts in a known folder

Load scripts into AutoCAD using APPLOAD or (load) command

Map scripts to AutoCAD toolbars or command aliases

Set AutoCAD to auto-load frequently used LISP routines

Test scripts in sample drawings before production use

Install AutoCAD on workstation

Enable Visual LISP IDE if available

Place scripts in accessible folder

Load scripts into AutoCAD session

Test on sample drawing before production use

.lsp script files

.dcl dialog files

Startup loading scripts (acad.lsp or acaddoc.lsp)

External data references (Excel, CSV, DB)

Command aliases and toolbar mappings

APPLOAD - load LISP scripts

LOAD - load individual .lsp file

UNLOAD - remove loaded LISP file

REINIT - reload modified scripts

COMMAND - invoke custom or built-in AutoCAD commands

Supports standard units (metric/imperial)

Localized messages can be used in scripts

Compatible with AutoCAD regional versions

Handles Unicode text in entities

Applicable worldwide for AutoCAD projects

Accessible to CAD professionals with LISP knowledge

Documentation via Autodesk and community tutorials

Works on all AutoCAD-supported platforms

Visual LISP IDE simplifies script debugging

Community support through forums and examples

Command-line prompts for interaction

DCL dialogs for custom GUI

Toolbars or ribbon buttons to invoke scripts

Output messages via princ or alert

No native graphics beyond AutoCAD rendering

Script runs per command invocation

Variables maintain state during execution

Selection sets define scope of operations

Entities modified in memory before update

Dialogs or prompts temporarily hold user input

Lists store entities, coordinates, and parameters

Variables track script state and options

Entity data retrieved via entget and modified via entmod

Batch operations process multiple drawings sequentially

External files may provide data inputs or outputs