AutoCAD 2009 includes many enhancements to help you work more efficiently with layers.
The Layer Properties Manger has been converted to a palette enabling you to keep it displayed while using other commands. Like other palettes, you can dock or anchor the Layer Properties Manager as well as enable auto-hide and transparency. The changes you make within the Layer Properties Manager are instantly applied to the drawing without the need for you to press an Apply button.
You can freeze columns so that key information, such as the layer name, remains visible while you scroll to the opposite side of the palette. Right-click menu options have been updated for clarity and to provide additional functionality. To gain real estate in the Layer Properties Manager, you can collapse the Filters pane.
The Layer Settings dialog box, which is accessible from the upper right corner of the Layer Properties Manager, includes new controls for Layer Isolation.
Many of the controls in the Layer Properties Manager are also available, at your fingertips, in the Layer panel of the new Ribbon.
A new option on the User Preferences tab of the Options dialog box provides you more control over layer property changes. You can now combine layer property changes for Undo and Redo operations similar to how you can combine them for zoom and pan operations.