GstarCAD 2026 · System Variables
System Variables > U System Variables > UNDOCTL
Function Description:
The UNDOCTL system variable is used to display options used in UNDO command.
(Read-Only)
| Type | Integer |
| Saved in | Not saved |
| Initial value | 53 |
The setting is stored as a bitcode using the sum of listed system variable values.
System Variable Value:
0: turn off UNDO
1: turn on UNDO
2: only one command can be undone
4: Auto is turned on
8: one group is active
16:treat ZOOM and PAN as one single action
32: Layer property operations are grouped as a single action
Article ID: 7958
Created: October 6, 2026
Last Updated: September 26, 2026
Author: kbadmin
Online URL: https://kb.gstarcad.com.my/article/undoctl-system-variable-gstarcad-2026-7958.html