This is a short, helpful maxscript snippet I wrote a few months back. Without a script like this, the Max UI only exposes a face’s Diagonal through the “Turn” and “edit triangulation” tools, both of which offer cumbersome, multi click interfaces to turn edges. Often an artist will need to turn quads’ diagonals quickly, so I wrote this script to quickly and easily toggle the diagonal rotation of every currently selected face.   fn turnDiagonals = (     local exitcode     if(classof (modPanel.getCurrentObject()) == Editable_Poly) then     (         selectedArray = (polyop.getFaceSelection $) as array         if (selectedArray.count >= 1) then         (                 undo "turn selected faces" on             (                 for f = 1 to selectedArray.count do                 ( -- Formula to get the number of diagonals --                     diagCount = (polyop.getFaceEdges $ selectedArray[f]).count - 3 --Turn every diagonal in the face --                     for d = 1 to […]