Header Block
  2 byte		(unsigned short) Number of Symbols
  For each Symbol
    4 byte		(unsigned int) Offset from start of file to Symbol Data


Symbol Data Block
  1 byte		(unsigned char) Number of Points
  For each Point
    1 byte		(unsigned char) X position
    1 byte		(unsigned char) Y position
  1 byte		(unsigned char) Number of Triangles
  For each Triangle
    1 byte              (unsigned char) First point
    1 byte		(unsigned char) Second point
    1 byte		(unsigned char) Third point
