int help_main(int argc, char **argv)
{
    FUNCTION *fp;
    int i, nl;
    FUNC_TYPE tp;
    char *prog;
    HELPLIST_CHOICE o;

    prog = opt_init(argc, argv, help_options);
    while ((o = opt_next()) != OPT_EOF) {
        switch (o) {
        default:
            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
            return 1;
        case OPT_HELP:
            opt_help(help_options);
            return 0;
        }
    }
    argc = opt_num_rest();
    argv = opt_rest();

    if (argc != 0) {
        BIO_printf(bio_err, "Usage: %s\n", prog);
        return 1;
    }

    BIO_printf(bio_err, "\nStandard commands");
    i = 0;
    tp = FT_none;
    for (fp = functions; fp->name != NULL; fp++) {
        nl = 0;
        if (((i++) % COLUMNS) == 0) {
            BIO_printf(bio_err, "\n");
            nl = 1;
        }
        if (fp->type != tp) {
            tp = fp->type;
            if (!nl)
                BIO_printf(bio_err, "\n");
            if (tp == FT_md) {
                i = 1;
                BIO_printf(bio_err,
                           "\nMessage Digest commands (see the `dgst' command for more details)\n");
            } else if (tp == FT_cipher) {
                i = 1;
                BIO_printf(bio_err,
                           "\nCipher commands (see the `enc' command for more details)\n");
            }
        }
        BIO_printf(bio_err, FORMAT, fp->name);
    }
    BIO_printf(bio_err, "\n\n");
    return 0;
}