lightspeed - Shows how objects moving at speeds near the speed of light look like.

       To adjust the velocity, use the slider along the right edge of the main window. You can also  type  in  a
       value,  using  the entry at the top right (press <Enter> once it is in). To change the units shown, press
       the button to the right of the entry, and it will cycle through a small list.

       The object travels in the positive-x direction, which can be visually checked by  activating  Objects  ->
       Coordinate axes.

       Most  interactive  control is performed with the mouse. By holding down a particular button, and dragging
       the pointer around, various camera motions can be obtained:

          Left button:  Revolve camera around view target

          Left button + Shift key:  Revolve view target around camera

          Middle button:  Translate camera left, right, up or down

          Right button:  Dolly in or out

       The first and last motions are generally the most useful.  Should the camera become difficult to  control
       at any point, it may be re-initialized by selecting Camera -> Reset View.

       Light  Speed!  is a simulator which can illustrate the effects of special relativity on the appearance of
       objects travelling at ultra-high speeds. Depending on the particular speed,  and  one's  point  of  view,
       relativistic  effects  can  cause the object to appear shorter, longer, brighter, darker, deformed and/or
       off-color.

       lightspeed - Shows how objects moving at speeds near the speed of light look like.

-h, --help
              Print this help screen

       -s, --simple
              Use simplified interface

       -a, --advanced
              Use advanced interface (default)

       object 3D file to load on startup (.3DS or .LWO)

                                                   April 2000                                      LIGHTSPEED(1)

lightspeed[-hsa][object]