superstrings


each position in the string can have up to 1,000 different values


	x = '12.3.1242.21.321.2.1'


	x[3] = 1242


	substr(2,3) = '3.1242.21'


	unicode chars, int values representing items


	e.g. cities 1 to 27

	
		'12.26.23.17'



implement as 4-byte leading length value and 2-bytes for each char.


sequences of events, etc.
