anchor.diff:  	50 NEXT I
   	99 END
   
  -The underscore stops the tokenizer and forces it to accept S as a variable and then procede with TOP which will be tokenized as 'TO' and P (as there is no 'TOP' keyword).
  +The underscore stops the tokenizer and forces it to accept S as a token and then procede with TOP which will be tokenized as 'TO' and P (as there is no 'TOP' keyword).
  +
  +The 'TOKENS' command displays the tokens identified in each line.
   
   Differences from K&K BASIC
   --------------------------
  
positive.code: Lists the current program on the screen, adjusting the spacing between keywords, variable names, and constants.
  
  Syntax:	PRETTY [line specification]
  
  The line specification is the same as the line specification for the LIST command.
  
  
negative.code: Keywords and tokens
  -------------------
  This implementation of BASIC tokenizes the program text and then parses the tokens.
  When tokenizing, BASIC builds the longest legal token from available text.
  This can lead to some problems, when legal constructs can be confused for keywords.
  
  For example:
  