extern int initVolumeButtons(buttonStruct * );
extern void makeVolumePanel(void );
extern void drawClipXBut(void );
extern void drawClipYBut(void );
extern void drawClipZBut(void );
extern void drawClipVolume(void );
extern void drawHitherControl(void );
extern void drawEyeControl(void );
extern void drawFrustrum(void );
extern void drawVolumePanel(void );