title: How to remove 'k' option when converting ANTLR 3 grammar to ANTLR 4
body: <p>The token lookahead option is gone in ANTLR 4, so ...
  This is the ANTLR 3 code:</p>
  
  <pre><code>declarations: // Order is important here.
      ( options { k = 3; }: DECLARE_SYMBOL identifier (variable_declaration | condition_declaration))*
          cursor_declaration* handler_declaration*
  ;
  </code></pre>