RtfTableRow r = tbl.newTableRow();
RtfTableCell c = r.newTableCell(40 * MM_TO_TWIPS);
c.setVMerge(RtfTableCell.MERGE_WITH_PREVIOUS);
c.newParagraph().newText("cell 2,0, VMERGED CELL, MUST NOT APPEAR IN RTF DOCUMENT");
r.newTableCell(40 * MM_TO_TWIPS).newParagraph().newText("cell 2,1, no merge, 40mm");
r.newTableCell(40 * MM_TO_TWIPS).newParagraph().newText("cell 2,2, no merge, 40mm");
c = r.newTableCell(40 * MM_TO_TWIPS);
c.setVMerge(RtfTableCell.MERGE_WITH_PREVIOUS);
c.newParagraph().newText("cell 2,3, VMERGED CELL, MUST NOT APPEAR IN RTF DOCUMENT");