Share Email Facebook Twitter LinkedIn ADCENTER (Command) Manages and inserts content such as blocks, xrefs, and hatch patterns. Find The DesignCenter window is displayed. Related Concepts About Locating DesignCenter ContentAbout Adding Content With DesignCenterAbout DesignCenter Related Reference DesignCenter WindowSearch Dialog Box (DesignCenter)Commands for DesignCenterCommands for Working With External References