specifies the name of a file that is the user register, which
lists <varname>username</varname>:<varname>password</varname>
pairs, one per line, colon separated. When a session begins, it
specifies the name of a file that is the user register, which
lists <varname>username</varname>:<varname>password</varname>
pairs, one per line, colon separated. When a session begins, it