Check and plaid patterns are also easy to create with multi-replicas that save you a great deal of the work of manually duplicating and arranging repeating elements (here, lines). Better yet, when you want to change the lines, you don't have to edit all copies. Simply edit the original lines and the plug-in will instantly update all the copies. As usual with SymmetryWorks, you can edit the seed elements live and instantly see the effect on the entire pattern.