tgetnum
sc_height = tgetnum("li");
sc_width = tgetnum("co");
if ((so_width = tgetnum("sg")) < 0)
LI = tgetnum("li"); /* get number of lines */
CO = tgetnum("co"); /* get number of columns */
if ((SG = tgetnum("sg"))<0)
if ((UG = tgetnum("ug"))<0)
LINES = tgetnum("li"); /* lines per page */
COLS = tgetnum("co"); /* columns on page */
extern int tgetnum(char *);
Val(T_co) = tgetnum("co");
Val(T_li) = tgetnum("li");
int tgetnum(const char *);
|| (Lpp = tgetnum("li")) <= 0) {
(pl <= 2 && (n = tgetnum(p)) != -1)))
int64_t tgetnum(char *);
int n = tgetnum("co");