voidkscrolldown(const Arg* a){	int n = a->i; 	if (n < 0)		n = term.row + n; 	if (n > term.scr)		n = term.scr; 	if (term.scr > 0) {		term.scr -= n;		selscroll(0, -n);		tfulldirt();	} 	#if SIXEL_PATCH	scroll_images(-1*n);	#endif // SIXEL_PATCH 	#if OPENURLONCLICK_PATCH	if (n > 0)		restoremousecursor();	#endif // OPENURLONCLICK_PATCH} voidkscrollup(const Arg* a){	int n = a->i;	if (n < 0)		n = term.row + n; 	if (term.scr + n > term.histn)		n = term.histn - term.scr; 	if (!n)		return; 	if (term.scr <= HISTSIZE-n) {		term.scr += n;		selscroll(0, n);		tfulldirt();	} 	#if SIXEL_PATCH	scroll_images(n);	#endif // SIXEL_PATCH 	#if OPENURLONCLICK_PATCH	if (n > 0)		restoremousecursor();	#endif // OPENURLONCLICK_PATCH}