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    Mainfunction VWR (Viewer)
      The objects are displayed but cannot be modified or deleted.

    Mousefunctions
    Graphics
    Views
    Viewports
    Hide / View

    Mousefunctions

      Left mousebutton:
        select object or indicate position or start selection of group
        With Ctrl-key pressed: suppress object-selection

      Right mousebutton:
        select object AND call one of the functions for that object.
        With Ctrl-key pressed: suppress object-selection
          (activate a function for the group already selected)

    Graphics

      Select object:
       press left mousebutton (and keep pressed);
         if only one object under cursor, no menu appears - release mousebutton;
         else select one of the objects (subObjects) of the menu and release mousebutton;

      Select group:
        press Ctrl-key (and keep pressed);
        press left mousebutton (and keep pressed);
        drag mouse
        Clear group with Esc-key.

    How to move, zoom, rotate the view:

    Moving scene                                 with Shift drag
       Press (and hold) the shift-key and move the mouse.
       No mouse button.

    Zoom in/out                         with Control + Shift drag
       Press and hold the Shift-key and the Ctrl-key and move the mouse.
       Moving from left to right causes the image to enlarge.
       Or using the mousewheel.

    3D rotation                                    with Ctrl drag
       Press (and hold) the Ctrl-key and move the mouse.
       Horizontal movement of the mouse rotates the part in the image
         plane (the center of rotation is always the screen center).
       Vertical movement of the mouse tilts the part in the image
         plane.

    Define the display center:
       Enable checkbox RotCen and select the new center
         - Select a vertex or
         - Select a free point (Ctrl drag, pick then a red point)

       The currently active display- and rotation-center is
         indicated by a white axis-system (in the center of the grafic-scene.

    Scal.All - Button:
       Display all objects (sets focus and zoom).

    Mdl - Button:
       Setting a fixed enlargement,
       according to the value of MODSIZ (approximate maximum size
         of the model).
       Change MODSIZ by function MODSIZ Standards/Tolerances/Modelsize,
         or by Command MODSIZ {value}

    Define representation accuracy for circles, ellipses, curves:
        Standards/Tolerances (in the menu bar above)
        Change the Modelsize, 'Modify'.
          This will automatically derive the tolerances and
          the whole model is immediately recalculated.

        The Modelsize directly affects all tolerances;
         - The poligonalisation-tolerance
         - Identical-point tolerance
         - The Model size in the export of mockup models (eg VRML)

    Predefined views:

    TopView   - top view   (view X-Y)
    Front     - front view (view X-Z)
    Side      - side view  (view Y-Z)
    AxoView   - Axonometric View

    Viewports:      save / restore the current viewport

      Save active viewport with keys Ctrl plus cursor-up.
      The number of Viewports is unlimited.

      Restore the previous stored viewport with keys Ctrl plus cursor-left.

      Restore the next stored viewport with keys Ctrl plus cursor-right.

      Remove the last activated viewport with keys Ctrl plus cursor-down.

      Loading a new model clears all stored viewports.

    Send bug-reports, suggestions for improvement to
      franz.reiter@cadcam.co.at