scrolling_copy_area(screen, firstline, nlines, amount) TScreen *screen; int firstline;		 int nlines; int amount;
scrolling_copy_area( TScreen *screen, int firstline,		 int nlines, int amount)
scrolling_copy_area(screen, firstline, nlines, amount)    TScreen *screen;    int firstline;		/* line on screen to start copying at */    int nlines;    int amount;			/* number of lines to move up (neg=down) */{    if(nlines > 0) {	vertical_copy_area(screen, firstline, nlines, amount);    }}