2013

ObjectARX application commands that are registered by acedRegCmd can
be accessed by preceding the command name with a period (.), followed by
the command's group name, followed by another period (.). For example, the
MTEXT command can be accessed with .acad_mtext.mtext.
To determine command names and groups of an ObjectARX application, use
the
ARX (page 111) command, and choose the Commands option to see a
listing of all currently loaded ObjectARX commands and their group names.
See also:
Use Built-in Commands in Macros
UNDO
Reverses the effect of commands.
Summary
UNDO displays the command or system variable name at the Command
prompt to indicate that you have stepped past the point where the command
was used.
NOTE UNDO has no effect on some commands and system variables, including
those that open, close, or save a window or a drawing, display information, change
the graphics display, regenerate the drawing, or export the drawing in a different
format.
List of Prompts
The following prompts are displayed.
Enter the
number (page 1125) of operations to undo or [Auto
(page 1125)/Control (page 1126)/BEgin/End (page 1126)/Mark/Back
(page 1126)]: Enter a positive number, enter an option, or press Enter to undo
a single operation
Number
Undoes the specified number of preceding operations. The effect is the same
as entering u multiple times.
Auto
Groups the commands in a macro, such as a menu macro, into a single action,
making them reversible by a single
U (page 1106) command.
U Commands | 1125