static int tagtxt(char *tagname, const char *tagtxt)
{
    //int txtsize = strlen(tagtxt);
    int size = 0;
    //int datasize = txtsize + 16;

#if 0
    size += u32out(datasize + 8);
    size += dataout(tagname, 4);
    size += u32out(datasize);
    size += dataout("data", 4);
    size += u32out(1);
    size += u32out(0);
    size += dataout(tagtxt, txtsize);
#endif

    return size;
}