communication ports in DOS systems:

: CON, PRN, AUX, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7,
COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9.

 

ISO 3166-1 alpha 3 country code (upper case), ISO 639-3 language code (lower case) and ISO
15924 alpha 4 script code (first letter upper case, other three letters lower case)