File names

Question:

The control can’t find a program that I called with the CALL PGM function. What restrictions apply to program names?

Answer:

File names must not exceed 25 characters, otherwise the TNC cannot display the entire file name. The characters ; * \ / "? >< are not permitted in file names. You cannot use any other special characters, including space characters, in file names.

The TNC can manage up to 6 directory levels. The combined length of the file name and path must not exceed 255 characters.