# File rtex.rb, line 1206
        def execute()
                @first                = false
                Logger.add( 5, self.class, "Execute #{Config.dvips}")
                @dataChanged = false  #clear flag
                stderrOff()
                result = system( Config.dvips(@filename) )
                stderrOn()
                @log = get_stderr()
                put_analyse( analyse( @log ) )
                if !result
                        Logger.add(1, self.class, "Error executing #{self.class}")
                end
                add_stdout( self.class ) if @stdoutInclude
                add_stderr( self.class ) if @stderrInclude
                return result
        end