Align selected objects.Press TAB-> Align or Align-Move.Press hold Shift-> multiselect.Press hold Ctrl(Alt on Mac)-> Copy.
Attach Selected Components to Face(Glue to Face)
Connect 2 selected edges,curves,arcs.
Copy Object Following Selected Groups or Components.
s4u_Delete_Instances_Overlap will delete all instances(or new Group) which is overlap its position(in selection or all)
Divide Faces or Surfaces follows 2 directions.
Export Scenes to JPG or PNG images.
Make Frame by Faces (Edges,Curves).
Hide/Show lines.Hide Intersect Lines of Objects.
Import the DXF file(text format) follows segment number(support Dynamic Block,Mline,Ellipse,Spline,Polyline,Circle,Arc,Line,3dface,Text)