P_3_1_4_02 Counting the words of a text and display them in a treemap diagram. All words with the same number of letters are grouped in a nested treemap. Only words with less than 10 letters are stored. KEYS r : toggle random mode h : only horizontal rows v : only vertical rows b : both kind of rows 1-9 : switch on and off words with this number of letters 0 : show all words s : save png