anchor.diff:      case Box1#box.bg of
   	no ->
   	    void;
  -	{yes,{R,G,B}} ->
  +	{yes,{_R,_G,_B}} ->
   	    pdf:save_state(PDF),
   	    pdf:set_fill_color_RGB(PDF,0.9,0.8,0.6),
   	    pdf:rectangle(PDF, X-5,Y-Leading-5,10+Measure*12,10+Leading, fill),
  
positive.code: -behaviour(gen_server).
  
  %% API
  -export([start_link/0, test/1, format/2, format_string/3]).
  
  %% gen_server callbacks
  -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
  
negative.code: 
  -define(SERVER, erlguten).
  
  %% this relates directly to the galley definition files
  %%
  -record(box, {continue,  % str()  = name of the continuation frame 
  	      free=1,    % int()  = first free line in the box
  	      grid,      % bool   = show a grid
  