7.1  Global Graphics and Screen

Procedures
    current-ps-setup
    flush-display
    get-display-depth
    get-display-left-top-inset
    get-display-size
    get-face-list
    get-family-builtin-face
    is-color-display?
    register-collecting-blit
    the-brush-list
    the-color-database
    the-font-list
    the-font-name-directory
    the-pen-list
    unregister-collecting-blit