With DesignCenter, you can manage block references, xrefs, and other content such as layer definitions, layouts, and text styles.
You can control the size, location, and appearance of DesignCenter.
The tree view in the left portion of the DesignCenter window and the four DesignCenter tabs help you find and load content into the content area.
The right portion of the DesignCenter window operates on the content displayed.
DesignCenter Online provides access to pre-drawn content such as blocks, symbol libraries, manufacturers' content, and online catalogs.