Selection: Add optional screen-relative control for constrained rotations.
Clipper: Change selection/manipulation to be consistent with other component editing.
Filtering: Either deselect filtered nodes, or render filtered nodes that are selected.
-Camera: Strafe while holding ctrl.
Texdef: Make texdef formats abstract, add conversion between texdef formats (use generic affine-texture-matrix format for conversions).
Textures Window: Precise display of texture size when selecting. (tooltip, possibly)
Status: 'Size of brush' display on status bar.