Transform functions are used for placing 3D models.
Select None; is like clicking Esc button, will unselect everything.
Transform; displays transform axes on the selected object allowing user to transform in its direction
Global Transform; displays transform axes on the selected object allowing user to transform in the global axes direction (parallel to the world axes)
When the user clicks any dragger, a small scroll combo box will appear in the Quick Access Toolbar. The user can use this box to input exact numbers for translation/rotation/scale or can just scroll up and down. If the user prefers to freely drag the 3D geometry, this can be done using the dragger in the 3D area.
