For more information contact Gary Wong (author of Gnu Backgammon) at gary@cs.arizona.edu.
In Backgammon, the Stone becomes Point, and is a single lower case letter.
`a' is the 1 point for white (and the 24 point for black), through to `x' which is the 24 point for white (and the 1 point for black). `y' is the bar, and `z' is the bearoff tray.
Normal moves specify the dice roll (as a pair of digits from 1 to 6) followed by 0 to 4 source/destination pairs. Moves which hit are not recorded differently.
Other legal moves include `double', `take' and `drop' for cube action (where `double' includes initial and subsequent doubles, as well as beavers).
White playing an opening 31 as 8/5 6/5.
Black failing to enter with 66.
White rolling 66 and playing 6/off 5/off 4/off 3/off.
White doubles, black beavers, white accepts the beaver and rolls 66 to play 6/off(4).
(none -- for cubeless or Crawford games).
Function:	Specifies information about the match the game belongs to.
Unknown tags should be ignored (a warning may be produced).
although this is not the Crawford game.
[Crawford:CrawfordGame] -- this IS the Crawford game.
[Jacoby] -- the Jacoby rule is in use for this game.