LOOP
500
HGHT CI30 FIL1 CLR1
TXT4 **H NGM 500 MB HEIGHT FORECAST (WHITE) -
TXTT HIT <RETURN> TO OVERLAY THE NAM FORECAST 500 MB HEIGHTS -
ENDL
LOOP
HGHT CI30 FIL2 CLR2&
TXT4 **H NGM 500 MB HEIGHT FORECAST (WHITE) -
TXT5 **H NAM 500 MB HEIGHT FORECAST (RED)   -
TXTT HIT <RETURN> TO DISPLAY NGM/NAM HEIGHT DIFFERENCES          -
ENDL
LOOP
TXTT                                                                      -
SDIF HGHT FIL1 HGHT FIL2 CLR1 CIN5
SDIF HGHT FIL1 HGHT FIL2 GRTN  001 CLR7 DASH CIN5&
SDIF HGHT FIL1 HGHT FIL2 LSTN -001 CLR2 DASH CIN5&
TXT4 NGM/NAM 500 MB HEIGHT DIFFERENCE (NGM MINUS NAM) -
TXT5 NEGATIVE VALUES (RED) > NGM HEIGHTS ARE LOWER THAN NAM  - 
TXT6 POSITIVE VALUES (BLUE)> NGM HEIGHTS ARE HIGHER THAN NAM -
ENDL
