VMS Help SCA, SCA Topics, Glossary, name  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    A string of characters used to identify symbols in your source
    code. Legal characters for a name are defined by whatever language
    you use. Each name has zero or more characters. Any character
    may appear in a name. Special characters that appear in a name
    must be quoted using double quotes. You do not need to quote the
    following: $, _, *, %, &, -, alphanumeric characters.