Hello, I have created three viewports in model space. Top left I have the top view Bottom left I have the left view On the right I have "orbit view" When I click on the top left view and change its UCS (UCS II) to LEFT all the other viewports change too. The problem is SOMETIMES the TOP UCS stays in the top view viewport althou I change the left view viewports UCS to LEFT (?!). So is there a variable that controls the thing or is it a bug..? Thanks, Masa