I am editing a drawing started by another. I use AutoCAD Mechanical 2008 on XP Pro SP2. What does "Invisible" mean here?: VIEWPORT Layer: "MVIEW" Space: Paper space Layout: Layout Invisible Visual Style: 2D Wireframe Handle = 16890e Status: On and Active Scale relative to Paper space: 0.1177xp Annotation Scale: 1:1 center point, X=6.02345567 Y=36.20710933 Z=0.00000000 width 6.93411060 height 17.74359056 All layers, including "MVIEW", are ON, THAWED and UNLOCKED. Nevertheless, I cannot see or manipulate the outline of this viewport. Chas C-Q