code: private void processIgnoredTokens(ParseTreeNode node, int position, int line, MemoEntry progress)
  	    throws TreeException, ParserException {
  	MemoEntry newProgress = processIgnoredTokens(node, position + progress.getDeltaPosition(),
  		line + progress.getDeltaLine());
  	if ((!newProgress.getAnswer().equals(Status.FAILED)))
  	    progress.add(newProgress);
      }
docs: <p>
  This method reads all hidden and ignored tokens from the text and puts them
  into the node as children.
  </p>
  <p>
  This is the non-recursive part of the procedure to be called by the packrat
  parser. The procedure itself is implemented recursively in
  {@link #processIgnoredTrailingTokens(ParseTreeNode, int, int, MemoEntry)}.
  </p>
  <p>
  Attention: This method is package private for testing purposes!
  </p>
  
  @param node
  is the current node in the {@link ParseTreeNode}
  @param position
  is the current parsing position.
  @throws TreeException
  @throws ParserException