Function Description:
The BACKZ system variable is used to set the offset value from clipping plane to target plane when saving current viewports by drawing units.
(Read-Only)
Type : Integer 
Saved in : Drawing 
Initial value : 0.0000
											  Article ID: 1340
											  Created: July 8, 2021
											  Last Updated: July 8, 2021
											  Author: GstarCAD MY /KW
											
Online URL: https://www.gstarcad.com.my/knowledge/article/backz-system-variable-1340.html