# File lib/cassiopee.rb, line 340
        def clear
                @suffixes = Hash.new
                        @matches.clear
                        @pattern = nil
                        @prev_max_position = 0
                        @prev_min_position = 0
                        @cache.clearCache()
                File.delete(@file_suffix+FILE_SUFFIX_POS) unless !File.exists?(@file_suffix+FILE_SUFFIX_POS)
        end