text -1 30 This button is used to confine the
text -1 40 mouse pointer within the X-window.

text -1 60 Press the button again to allow the
text -1 70 mouse pointer to leave the window.

text -1 100 There are two main reasons why you
text -1 110 would want to confine the pointer.

text 10 140 1.
text -1 150 Your X server can only display 256
text -1 160 colours ( 8 bbp ) and you don't want
text -1 170 the display to keep flashing at you.

text 10 200 2.
text -1 210 You want to play 'full screen'.

text -1 230 To play 'full screen', start the game
text -1 240 with  'xlincity -b', change your screen
text -1 250 resolution to 640x480 (ctrl-alt-numpad+
text -1 260 for linux YMMV). Then confine the pointer
text -1 270 and move the mouse to each edge.
text -1 280 Hey presto - full screen.