https://autocadtips1.com/2014/09/04/base-command-beware-of-xrefs-blocks Thursday, September 4th, 2014 When using the BASE command in a drawing, keep in mind that the coordinates should be o,o,o (zero,zero,zero) [as seen below]. If you execute the BASE command and these coordinates have changed, take note of the alert that occurs (shown below). It seems to be more concerned with the Z coordinate not being set to zero than anything else, but at the very least it allows you...
