#define ALTYGRID 0x01 /* use alternative y grid algorithm */
#define ALTAUTOSCALE 0x02 /* use alternative algorithm to find lower and upper bounds */
#define ALTYGRID 0x01 /* use alternative y grid algorithm */
#define ALTAUTOSCALE 0x02 /* use alternative algorithm to find lower and upper bounds */
int lazy; /* only update the image if there is
reasonable probablility that the
existing one is out of date */
int lazy; /* only update the image if there is
reasonable probablility that the
existing one is out of date */