#include <u.h>#include <libc.h>#include <draw.h> intmousescrollsize(int maxlines){	static int lines, pcnt;	char *mss; 	if(lines == 0 && pcnt == 0){		mss = getenv("mousescrollsize");		if(mss){			if(strchr(mss, '%') != nil)				pcnt = atof(mss);			else				lines = atoi(mss);			free(mss);		}		if(lines == 0 && pcnt == 0)			lines = 1;		if(pcnt>=100)			pcnt = 100;	} 	if(lines)		return lines;	return pcnt * maxlines/100.0;	}