Indian Palaeography c9.s5.13

c9.s5.13

If we leave aside the additional strokes and compounds, the actual number of signs in the Indus Script, according to the present reckoning, is 27 objects and 27 geometrical forms, besides numerals, brackets, and two magic emblems. The number is increased to 474 (the remainder 63 being numerals, &c.) by the following two principles:
(i) by combination with other signs;
(ii) by the addition of strokes (*a*) internal, (*b*) external, from 1 to 6, besides the arch-like sign.