private int tr_16(char ch)
    {
        if(chin(ch,'>','~')) return 4;
        if(chin(ch,'&','9')) return 4;
        if(chin(ch,';','<')) return 4;
        if(cheq(ch,'=')) return 100;
        if(cheq(ch,':')) return 130;
        if(chin(ch,' ','$')) return 4;
        if(cheq(ch,'\n')) return 76;
        if(cheq(ch,'\t')) return 4;
        return 0;
    }