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

 namespec

    Specifies the name of the symbol to show. If namespec includes
    asterisks (*), each asterisk is treated as a wildcard character
    that matches any zero or more characters. All symbols whose names
    match namespec are shown.

 scope

    Specifies the name of a module, routine, or lexical block, and
    may include pathname qualification.