Library /sys$common/syshlp/anlrmshlp.hlb DOWN, Parameter  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 branch

    Specifies the branch you want to follow when the current level
    has several branches. If there are several branches from the
    current level and you do not specify a value for the branch
    parameter, the Analyze/RMS_File utility prompts you by displaying
    a list of possible branches.

    You can also use a question mark after the DOWN command to obtain
    a list of the possible branches.