Reader             Scans a word list to find those that can be made with
                   the specified letters.

                   Compiled with Lattice 4.0

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15 Jun 90   V0.01  Minimum level program. It works, just!
                   Supports spares and prints valid words at 5 per line.
                   All debugging code removed for clarity.
                   All code now commented.

16 Jun 90   V0.1   Now outputs to RAM:VALID and screen. (no choice yet!)
                   File output includes a count by word length and a
                      count by initial letter.
                   Code tidied slightly, removing unused variables.
                   Title added to output.

16 Jun 90   V0.15  Switch for specific word length [4 to 9 or long(10+)].
                   Printf's replaced by puts where possible.

17 Jun 90   V0.2   Percentage success rate added.
                   Discovered system will guru if RAM:WORDS not present!!
                      but not yet fixed.
                   File output now has a table listing words found
                      by length and initial letter.
                   Program guru'd when finding Z words due to an incorrect
                      array dimension, now fixed.
                   Changed some ints to shorts but most vars still global.
                   Extended table data showing more percentages.
                   Cleaned up output format.

19 Jun 90   V0.3   Added Matcher facility and suitable switch. [-m]
                   Made a separate function of recording a valid word.

25 Jun 90   V0.4   Tidied up code a little, reducing global variables.
                   Added code to avoid crash if data file not in place.
                   Program now looks for data file in RAM: or on disk,
                      and doesn't crash if not found!

14 Oct 90   V0.5   After testing, corrected wordlist file naming, now
                      using WORDALL.DAT in RAM: or WORDLIST: (possibly
                      requiring an assign)
                   Added -z switch to clear contents of VALID. Omitting
                      will append a new scan to previous scan.
                   Corrected some titling. SEARCHING for a match or
                      SCANNING for letter strings.
                   Limit spares to '.' only. Some problems occurred when
                      using other non-letter characters ($ gives major
                      problems!).
                   First test by someone other than me. Thanks stuart!

 6 Jan 91   V1.0   First official release for Fred Fish library. Hopefully
                      bug free!!
                   Writes valid word list to VLD:valid, enabling the file
                      to be written to disk.