string Int2Uni(integer i)
// Totally works with mono. Does NOT work with LSLeditor.
// Can't be 0.  Should be in UTF-16 range.  No error checking.
// Only works in the 0x0001 thru 0xD7FF range (UTF-16 compatibility).
{
    if (i < 0x80)   return llUnescapeURL("%" + Byte2Hex(i));
    if (i < 0x800)  return llUnescapeURL("%" + Byte2Hex((i >>  6) | 0x3FC0) + "%" + Byte2Hex((i | 0x80) & 0xBF));
                    return llUnescapeURL("%" + Byte2Hex((i >> 12) | 0x1FE0) + "%" + Byte2Hex(((i >> 6 ) | 0x80) & 0xBF) + "%" + Byte2Hex(((i | 0x80) & 0xBF)));
}

string Byte2Hex(integer i)
// This just works on integers from 0x00 to 0xFF.
{
    return llGetSubString("0123456789abcdef", i = ((i >> 4) & 0xF), i) + llGetSubString("0123456789abcdef", (i & 0xF), (i & 0xF));
}