   7. MISC COMMANDS (WINDOWS, INTERFACE, ...)
-----------------------------------------------------------------
   Type "?<command>" or "help(<command>)" to get a
   description of one of the following commands:

    ABOUT             - show program-information
    AVAIL             - prints available memory
    CALC or .         - calculate mathematical expressions
    CD                - change Directory
    CLOSEWINDOWS      - close all windows drawing specified object
    EXEC              - execute a batchfile
    ECHO              - type a message (useful in batchfiles)
    FOR               - for-loops
    GET               - show program-parameter(s)
    IF                - simple if-construct
    INTERPOLATEDATA   - interpolate points from data-file
    LOADCONFIG        - load a config-file (default s:.dustrc)
    LWSTAGING         - create multiple Scene-Files from one (for LIGHTWAVE)
    MEMORY            - show memory consumption of an object
    MEMORYP           - show memory consumption of a particle-object
    REQUEST           - let the user confirm actions (in batchfiles)
    REXX              - enter the Dust-ARexx-mode
    SAVECONFIG        - save a config-file (default s:.dustrc)
    SET               - set program-parameters
    SHOWIMAGE         - display an image on the Workbench-Screen
    SHOWVALUES        - show all user-defined constants
    STAGING2          - create a multi-object-stagefile ("ISL2.0")
    STAGING3          - create a multi-object-stagefile ("ISL3.x")
    TIME              - print execution time of the last command
    WINDOW            - open a preview window
    WINDOWSEQ         - open well-arranged windows showing an object-sequence
    WINDOWCLOSE       - close the specified window
    WINDOWDRAWMODE    - change the perspective-flag of the specified window
    WINDOWFRONT       - bring the specified window into foreground
    WINDOWOUTLINED    - change the outlined-flag of the specified window
    WINDOWPERSPECTIVE - change the perspective-flag of the specified window
    WINDOWPOS         - move the specified window
    WINDOWREDRAW      - redraw the contents of the specified window
    WINDOWRESCALE     - rescale the specified window (keepscale=TRUE)
    WINDOWROTX        - increase the angle of X-rotation
    WINDOWROTZ        - increase the angle of Z-rotation
    WINDOWSAVE        - save the image of the specified window as ILBM
    WINDOWSIZE        - size the specified window
    WINDOWZOOM        - increase the zoom-factor of the specified window
    !                 - execute DOS-commands
    # or ;            - comment
