The amount of block grid columns for large monitors 64.063em - 90em. <br /><strong>Requires</strong>:<ol><li>Visible items,</li><li>Skin Grid for starter,</li><li>A reasonable amount of contents,</li><li>Optionset with Rows and slidesPerRow = 1.</li></ol>This is module feature, older than core Rows, and offers more flexibility. Leave empty to DIY, or to not build grids.