Start a new Column in the document. Columns must be set using SetColumns() or <columns>. Height justification for the Columns is disabled when column breaks are set explicitly.
**Note:** Columns are incompatible with (and automatically disable): borders for block-level elements (DIV, P etc), table rotation, and collapsible margins for blocks e.g. top and bottom margins for a DIV will not collapse (default) at the top/bottom of a column.