From the Tools toolbar, click Pickable visible background
.
Select a plane.
A Work on Support is automatically created. If a
Work on Support already exists in the same plane, it is activated.
Click Pickable visible background
to deselect it.
The Work on Support is removed from the specification tree, if it
is automatically created and if there are no geometries created on
this Work on Support.
Click No 3D background
and a join feature.
All geometric elements available in the plane of the join feature are visible. All
the other elements are invisible.
Click Unpickable background
.
You can only pick the geometric elements that are in this
plane.
Other elements cannot be picked:
Click Low intensity background
.
Geometric elements that are in the plane are displayed normally.
However, elements that are not in the plane
are displayed with a low intensity (including curves and wireframe
elements) but they still can be picked:
Click Unpickable low intensity background
.
Geometric elements that are not in the plane are displayed with a
low intensity and they cannot be picked:
Click Lock current view point
.
Now, you can only perform translations in the plane parallel to
the screen and rotations along the axis normal to the screen as well
as zoom in and zoom out.
Note that you must use the mouse to perform
these transformations when the current view point is locked.