anchor.diff:  
       EndTime =  element(2, lists:last(DrawTrace)),
   
  +    case 565 < (EndTime div ScaleX) of
  +        true -> io:format("Warning: trace (~pcm) will be to wide for LaTeX (max. 565cm).~n",
  +                          [EndTime div ScaleX]);
  +        false -> ok
  +    end,
       %% draw nodes and timelines
       _ = lists:foldl(
             fun(X, Acc) ->
  
positive.code: % @copyright 2012 Zuse Institute Berlin
  
  %   Licensed under the Apache License, Version 2.0 (the "License");
  %   you may not use this file except in compliance with the License.
  
negative.code:                   io:format(File,
                              "\\draw[color=gray,very thin] (0, -~p) -- (~pcm, -~p);~n",
                              [length(Acc)/2, (EndTime+10)/ScaleX, length(Acc)/2]),
                    case EndTime > 600 of
                        true ->
                            io:format(File,
                                      "\\foreach \\x in {~p,~p,...,~p}~n"
                                      "  \\node[anchor=south east,gray,inner sep=0pt] at (\\x, -~p) {\\tiny ~s};~n",
                                      [300 div ScaleX, 600 div ScaleX,
                                       ((trunc((EndTime+10)) div 300) * 300) div ScaleX,
                                       length(Acc)/2, LatexNode]);
                        false -> ok
                    end,
                    [X | Acc]
            end,
            [], Nodes),
  