2012

Specify a Selection Fence
In a complex drawing, use a selection fence. A selection fence looks like a
polyline and selects only the objects it passes through. The circuit board
illustration shows a fence selecting several components.
Use Other Selection Options
You can see all selection options by entering ? at the Select Objects prompt.
For a description of each of the selection options, see SELECT.
Remove Selection from Multiple Objects
You can enter r (Remove) at the Select Objects prompt and use any selection
option to remove objects from the selection set. If you are using the Remove
option and want to return to adding objects to the selection set, enter a (Add).
You can also remove objects from the current selection set by holding down
Shift and selecting them again, or by holding down Shift and then clicking
and dragging window or crossing selections. You can add and remove objects
repeatedly from the selection set.
Prevent Objects from Being Selected
You can prevent objects on specified layers from being selected and modified
by locking those layers.
Typically, you lock layers to prevent accidental editing of particular objects.
Other operations are still possible when a layer is locked. For example, you
can make a locked layer current, and you can add objects to it. You can also
use inquiry commands (such as LIST), use object snaps to specify points on
objects on locked layers, and change the draw order of objects on locked layers.
Select and Modify Objects | 225