Expand Selection
Selection > Expand Selection
 

Description:

      The Expand Selection (Selection > Expand Selection) command will expand the current selection to all contiguous elements. For example, if sphere has been cut into two separate halves, and one vertex is selected on one half of the sphere, then Expand Selection will select all the vertices of that half of the sphere. Even if the entire sphere is one object, only that half will be selected.


Notes:

-Expand selection has no effect in object selection mode.

-This command can be particularly useful when working with separate pieces of a single object.  To break pieces of an object into separate objects, Copy each piece and Paste it as a new object.