An article from the Shuttle-Craft Bulletin by Harriet Tidball on variations of the classical M's and O's draft, a four-shaft weave that contrasts tabby and weft-rep blocks. It covers enlarging the threading units to lengthen rep floats, adding a balance unit, using three or five threads per rep rib to avoid overlapping blocks, and adding twill or broken twill areas. It also describes a ten-thread unit with added tabby threads. Threading and drawdown diagrams illustrate each variation, and the last page shows a woven sample.