The Select menu provides shortcuts for
selecting objects. All objects can be selected or None. Those
currently not selected can be selected in place of those that are
selected (Invert). For any selected objects you can cause those
objects directly connected to them to also be selected
(Connected). Doing this
repetitively results in all connected objects being selected, which is
the same as selecting Transitive.
Finally, you can select all objects that are of the same type as the
currently selected object.
Selecting same type actually works even if objects of
different types are selected.
The following five check buttons
modify how new objects are selected. Usually a new selection replaces
the old selection as the final set of selected objects. With
Union the final set of selected objects consists of the
previously selected object plus the newly selected
objects. Intersection results in those object that were
previously selected and now selected again to be in the final
selection, but no others. Remove removes from the old set of
selected objects those that are newly selected. And Invert
causes those objects newly selected to have their state of selection
inverted--that is, those previously selected and now newly selected
be no longer be selected, and those not previously selected but
included in the new selection will become selected.
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