FD is left-to-right mark (U+200E) and FE is right-to-left mark (U+200F), as specified in a newer amendment as ISO/IEC 8859-8:1999. Israeli Standard SI1311:2002 matches ISO/IEC 8859-8:1999 except for a number of additional character allocations for the euro sign, new shekel sign and more advanced explicit bidirectional formatting.