Function Description:
The OSNAPZ system variable is used to control whether the object snap automatically project to the plane which is parallel with the XY plane of current elevation in current UCS.
Type : Integer 
Saved in : Not saved 
Initial value : 0 
Range : 0,1 
System Variable Value:
0 : the object snap uses specified Z value of point
1 : the object snap uses the set elevation to replace specified Z value of point 
											  Article ID: 1733
											  Created: July 22, 2021
											  Last Updated: July 22, 2021
											  Author: GstarCAD MY /KW
											
Online URL: https://www.gstarcad.com.my/knowledge/article/osnapz-system-variable-1733.html