2004

360 | Chapter 17 Change Existing Objects
To select objects with a fence
1 At the Select Objects prompt, enter f (Fence).
2 Specify points to create a fence that passes through the objects you want
to select.
3 Press
ENTER to complete the selection.
To remove several objects from the selection set
1 After selecting objects, at the Select Objects prompt, enter r (Remove).
2 Enter any selection option such as cp (Crossing Polygon) or f (Fence), and
select the objects to be removed from the selection set.
To return to adding objects to the selection set, enter a (Add).
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 edit-
ing 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 display
order of objects on locked layers.
To lock or unlock a layer
1 On the Layers toolbar, click the Layer Properties Manager button.
2 In the Layer Properties Manager, click the padlock for the layers that you
want to lock.
3 Click OK.
If the padlock is closed, the layer is locked and objects on that layer cannot
be selected.
Layers toolbar
Command line
LAYER
Filter Selection Sets
Using either Quick Select (QSELECT) from the Properties palette or the Object
Selection Filters dialog box (
FILTER), you can filter selection sets by property
(such as color) and by object type. For example, you can select all of the red
circles in a drawing without selecting any other object or you can select all
objects except the red circles.