# File lib/cassiopee.rb, line 390
                def loadAmbiguityFile(f)
                  if(!File.exists?(f))
                     $log.error("File "<< f << "does not exists")
                         exit(1)
                  end
                  @ambiguous = Hash.new
                  file = File.new(f, "r")
                  while (line = file.gets)
                    definition = line.downcase.chomp
                        ambdef = definition.split('=')
                        ambequal = ambdef[1].split(',')
                        @ambiguous[ambdef[0]] = ambequal
                  end
                  @useAmbiguity = true
                  $log.debug("loaded ambiguity rules: " << @ambiguous.inspect())
                  file.close
                
                end