tablw.icn: Program to tabulate words in a file

   This program tabulates words and lists number of times each
word occurs. A word is defined to be a string of consecutive
upper- and lowercase letters with at most one interior occurrence
of a dash or apostrophe.

Options: The following options are available:

     -a   Write the summary in alphabetical order of the words.
          This is the default.

     -i   Ignore case distinctions among letters; uppercase
          letters are mapped into to corresponding lowercase
          letters on input. The default is to maintain case dis-
          tinctions.

     -n   Write the summary in numerical order of the counts.

     -l n Tabulate only words longer than n characters. The
          default is to tabulate all words.

     -u   Write only the words that occur just once.