Make Frame by Faces (Edges,Curves).
Hide/Show lines.Hide Intersect Lines of Objects.
Select edges for Make Faces
Mirror Objects by 1 click.
On/Off Shadow in All Scenes.
Paint Material to Face in Group,Component.Detele Material in Object.Replace Material.Rotate,Move,Align texture.Reverse Face.Get area of material.
Reset Axis of Selected Groups(Components) Move Origin of Selected Groups(Components) or Nested Groups(Components).
Set Scale Definitions for Components or Groups.
s4u toComponents allows convert objects to components.
Weld Edges to Curves.