2011

Table Of Contents
PICKAUTO
Controls automatic windowing at the Select Objects prompt.
PICKBOX
Sets the object selection target height, in pixels.
PICKDRAG
Controls the method of drawing a selection window.
PICKFIRST
Controls whether you select objects before (noun-verb selection) or after you
issue a command.
PREVIEWEFFECT
Specifies the visual effect used for previewing selection of objects.
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.
To help you differentiate between locked and unlocked layers, you can do the
following:
Hover over an object to see whether a lock icon is displayed
Dim the objects on locked layers
NOTE Grips are not displayed on objects that are on locked layers.
Quick Reference
LAYER
Manages layers and layer properties.
298 | Chapter 18 Change Existing Objects