F_SCR
if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
#define S(x) ((x)+F_SCR-1)
else if (val >= F_SCR && val <= L_SCR)
fprintf(fp, " scr%02d ", val - F_SCR + 1);
else if (value >= F_SCR && value <= L_SCR)
printf(" S(%2d),", value - F_SCR + 1);