VMS Help SET, CARD_READER, Qualifiers  *Conan The Librarian (sorry for the slow response - running on an old VAX)

1 - /026

    Sets the card reader for cards punched on an 026 punch.

2 - /029

    Sets the card reader for cards punched on an 029 punch.

3 - /LOG

       /LOG
       /NOLOG (default)

    Controls whether log information is displayed at the terminal to
    confirm that the card reader is set.