SYNOPSIS
        string *parse_command_prepos_list(void)

DESCRIPTION
        Used by parse_command(). Return an array of common
        prepositions in the installation's native language.

EXAMPLE
        string *parse_command_prepos_list() {
            return ({ "in", "on", "under", "behind", "beside" });
        }

SEE ALSO
        parse_command(E)