Library /sys$common/syshlp/pca$help.hlb SET, VERIFY, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The SET VERIFY command causes PCA to echo subsequent command
    input to the terminal. Input verification is useful when you
    want to see the commands from command procedures as they are
    executed. You can disable input verification with the CANCEL
    VERIFY command.