8 XBATTLE4, GAMES, Multi-user battle strategy game under X  J     Xbattle  is a   concurrent  multi-player battle  strategy   game  thatJ     captures the dynamics  of a  wide  range of military  situations.  TheJ     game board is a matrix of game squares (or hexagons- see "-hex" optionJ     below) which can be  occupied by troops  of various colors  or shades.J     The number of troops in a square is indicated by the size of a coloredJ     troop square (or  circle, with "-hex") within the  game   square.  TheJ     troops are commanded by clicking the mouse near the edge of the squareJ     in the direction that the movement is to take place.  The command willJ     be acknowledged by the appearance of a command vector, and thereafter,J     in each  update cycle, a certain  proportion  of  the troops will moveJ     from the source  square  to the destination  square until  the  sourceJ     square is exhausted.  Command vectors can be set in several directionsJ     at  once, in which case  the movement is   divided evenly between  theJ     vector directions, and the  command  remains  active until  cancelled.J     Thus a  trail of squares can be  set up as  a supply   line that  willJ     deliver troops steadily at  its endpoint.   The command vector remainsJ     active even if the  number of troops  in that square is zero, althoughJ     the command vector will then be displayed at half length.  The game isJ     concurrent, so that  commands  are given continuously  by  all playersJ     without waiting for  turns.  Different  combinations of options create     radically different games.  