Images can be assigned to commands, and can be of two different types: standard and custom. Standard commands come with AutoCAD in a library, while custom commands are created and managed from the Button Image pane and the Button Editor dialog box in the Customize User Interface Editor.
Custom images can be created and edited which can be assigned to a command.
Custom images stored as externally saved BMP files can be imported into a loaded customization file and exported from a customization file to a local or network drive. Custom images can be deleted from a customization file in the Image Manager.