Treats a 0x1a character in the source file as the end of file.
>>-.---.-.----.—EOF-1A--->< +-/-+ +-NO-+
Use NOEOF-1A if you embed 0x1A characters in literals in your source code. Alternatively, use the x"1A" literal format to represent 0x1A characters in your literals.
Using x'1A' is a historical method of indicating an end of file on old PC operating systems.