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INTEGER FUNCTION PRSTTY (UNITNO) C$ (Parse Internal - Terminal Type) C$ Given a FORTRAN unit number corresponding to an OPEN file, C$ return as a function value an integer giving the terminal C$ type as required by the parsing package: C$ C$ -1 = not a terminal, C$ 0 = hardcopy or unknown, C$ 1 = VT52, C$ 2 = VT100, C$ 3 = Televideo, C$ 4 = Hazeltine-1500 C$ C$ In general, this routine will be system-dependent, and this C$ portable version simply returns -1. C$ (12-Apr-1991)