JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. To Force Each Data Point to Lie on the Isometric Plane Select Drawing > Drawing Aids > Locks dialog launcher, and turn on Isometric Lock. When a linear element is placed, it "snaps" to the Isometric Plane. Line string placed with Isometric Lock on and Isometric Plane set to Top. Note how the lines are constrained. Parent topic: Isometric Drawing