Wall has to be valid polygonal object without any corruptions.
Auto UCS must be enabled!
Then just use Window tool by clicking in perspective viewport directly on the wall.
Then expand edge of the window tool to the wall edge.
CORN button should appear in the viewport.
Wall has to be valid polygonal object without any corruptions.
Auto UCS must be enabled!
Then just use Window tool by clicking in perspective viewport directly on the wall.
Then expand edge of the window tool to the wall edge.
CORN button should appear in the viewport.
Viktor Veličko, WTools3D founder