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+Stan is a small console application that works on all Unix systems. It is
+able to generate several statisical information of a stream. A stream can
+be either standard input or given files. Stan can be used in order to analyse
+encrypted data or to measure the quality of a pseudo random number generator. 
+
+There are three types of statistics generated by Stan: 
+
+   - General Statistics
+     General statistical standard values are based on the bytes of the input
+     stream. Stan is able to calculate the mean, the median, the deviation
+     and the chi-squared value of the given stream. 
+
+   - Pattern Statistics
+     It is possible to do pattern analysis up to a specified pattern length.
+     Stan will analyse the patterns inside the stream and output the most
+     used patterns and the range of patterns used. 
+
+   - Bit Statistics
+     By analysing the bit of the given stream and dividing them into run,
+     sequences of the same bit, stan is able to show information that are
+     useful for analysing pseudo random numbers. Stan calculates ratios
+     between run lengths and 0 runs to 1 runs. 
+
+WWW: http://www.r0q.cx/stan/