GPCSetBeepDefaults (freq, duration) TEKINT.C
 
int freq The frequency of the desired tone (in Hertz).
int duration The duration of the tone (in hundredths of a second).
 
GPCSetBeepDefaults() allows you to control the tone generated at the end of the plot. The defaults are 440 and 50. Thes values are defined in GRAPHIC.H as:
#define GPC_BEEP_FREQUENCY 440 
#define GPC_BEEP_DURATION 50.