src/cmd/tcs/gb.h - plan9 - Git at Google

 /*
 	gb ranges from a1a1 to f7fe inclusive
 	we use a kuten-like mapping the above range to 101-8794
 */
 #define		GBMAX	8795

 extern long tabgb[GBMAX];	/* runes indexed by gb ordinal */
	/*
	gb ranges from a1a1 to f7fe inclusive
	we use a kuten-like mapping the above range to 101-8794
	*/
	#define GBMAX 8795

	extern long tabgb[GBMAX]; /* runes indexed by gb ordinal */