ruleSet:=parseRuleSet("# This rules file is extracted from Wikipedia:",
   "# http://en.wikipedia.org/wiki/Markov_Algorithm",
   "A\t->\tapple", "B -> bag", "S -> shop", "T -> the",
   "the shop -> my brother", "a never used -> .terminating rule");
ruleSet.println();
markov("I bought a B of As from T S.",ruleSet).println();