Customization Guide (.pdf) - Documentation & Online Help - Autodesk

NOTE The key combination Ctrl+D can be used to duplicate a command
in-place.
Quick Reference
Commands
CUI
Create Macros
Manages the customized user interface elements in the product.
A macro defines the action that results when an interface element is selected.
A macro accomplishes a drawing task that would otherwise take a series of
actions by a user.
Overview of Macros
A macro can contain commands, special characters, and DIESEL (Direct
Interpretively Evaluated String Expression Language) programming code.
NOTE As AutoCAD LT is revised and enhanced, the sequence of prompts for
various commands (and sometimes command names) might change. Therefore,
your custom macros might require minor changes when you upgrade to a new
release of AutoCAD LT.
You add macros to interface elements by using the Customize User Interface
(CUI) Editor. Select an existing command or create a new command in the
Command List pane. Enter macros in the Macros section of the Properties
pane. There are no length limitations for macros. However, you do need to
know how specific characters are used in macros and be aware of other
considerations or limitations.
Macro Basics
A macro in a user interface element can be as simple as a command (such as
circle) and some special characters (such as ^C^C).
Create Macros | 101