et.column.html#var-intersect-missing-sets">intersect-missing-sets</a> </li><li> <a href="tech.v3.dataset.column.html#var-is-column.3F">is-column?</a> </li><li> <a href="tech.v3.dataset.column.html#var-is-missing.3F">is-missing?</a> </li><li> <a href="tech.v3.dataset.column.html#var-missing">missing</a> </li><li> <a href="tech.v3.dataset.column.html#var-new-column">new-column</a> </li><li> <a href="tech.v3.dataset.column.html#var-parse-column">parse-column</a> </li><li> <a href="tech.v3.dataset.column.html#v