IsPreScreen
if (IsPreScreen(SP_PARM)) {
if (IsPreScreen(SP_PARM)) {
#define CURRENT_SCREEN_PRE (IsPreScreen(CURRENT_SCREEN) ? CURRENT_SCREEN : new_prescr())
#define IsValidScreen(sp) (HasTerminal(sp) && !IsPreScreen(sp))
if (IsPreScreen(SP_PARM)) {
if (IsPreScreen(SP_PARM)) {