/sys$common/syshlp/helplib.hlb PRODUCT, INSTALL, Qualifiers, /HELP  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /HELP
       /NOHELP (default)

    Controls whether detailed explanations of product options and
    informational text are displayed. The first time you install a
    product, these explanations can help you decide which options to
    select. When you perform subsequent installations or upgrades,
    you might choose the brief explanations to save time.

    When /NOHELP is selected, you can request a detailed explanation
    about a question by performing one of the following actions at
    the prompt:

    o  Press the Help key or PF2 key

    o  Type ? and press the Return key