436   PART   VI:   SOUTH ASIAN WRITING SYSTEMS
The Lepcha        script
      According      to tradition, the   Lepcha    (or     (table 40.4) was devised in
                                                         Rong)   script
      1720 by Raja Phyag-rdor-mam-rgyal of the Tibetan dynasty in Sikkim (India). It is
      based on Tibetan writing with some influence from Burmese script (section 42), and
      exhibits Chinese influence in that      it   was formerly written   in   columns from   right to
      left. The 90° turn accounts for the unusual indication of syllable-closing
                                                                                 consonants
      with superposed diacritics rather than conjuncts (Haarh 1959;   Chakraborty  1978).
      TABLE