The grammar for this Pascal Parser is based on the grammar on 
pp. 110-115 of /The Pascal User Manual and Report/ by Jensen
and Wirth.

Text Files:
  keywords.txt
    A list of the keywords in Pascal.  (Treated as tokens.)
  symbols.txt
    A list of the important symbols in Pascal.  (Treated as tokens.)
  identifiers.txt
    A list of common identifiers.  (Treated as identifier tokens.)
  grammar.txt
    The modified Pascal grammar.  Nonterminals are presented in
    alphabetical order.  Some rules that were "factored out" of
    the original grammar appear at the end.

Java Files:
  PascalTokens.java
    Constant definitions of the Pascal tokens.
  PascalNonterminals.java
    Constant definitions of the Pascal nonterminals.
  PascalTokenizer.java
    A simple tokenizer for Pascal.
  PascalParser.java
    A simple parser for Pascal.

Test Programs:
  TestPT.java
    A test of the Pascal tokenizer.  Run with
	java pascal.TestPT <program>
  TestPP.java
    A test of the Pascal parser.  Run with
	java pascal.TestPP <program>

Pascal Programs:
  silly.pas
    My primary test program