code: private void addAlignedExample() {
  		add(new WHeading(HeadingLevel.H2, "WRow / WCol with column alignment"));
  		WRow alignedColsRow = new WRow();
  		add(alignedColsRow);
  		WColumn alignedCol = new WColumn();
  		alignedCol.setAlignment(WColumn.Alignment.LEFT);
  		alignedCol.setWidth(25);
  		alignedColsRow.add(alignedCol);
  		WPanel box = new WPanel(Type.BOX);
  		box.add(new WText("Left"));
  		alignedCol.add(box);
  		alignedCol = new WColumn();
  		alignedCol.setAlignment(WColumn.Alignment.CENTER);
  		alignedCol.setWidth(25);
  		alignedColsRow.add(alignedCol);
  		box = new WPanel(Type.BOX);
  		box.add(new WText("Center"));
  		alignedCol.add(box);
  		alignedCol = new WColumn();
  		alignedCol.setAlignment(WColumn.Alignment.RIGHT);
  		alignedCol.setWidth(25);
  		alignedColsRow.add(alignedCol);
  		box = new WPanel(Type.BOX);
  		box.add(new WText("Right"));
  		alignedCol.add(box);
  		alignedCol = new WColumn();
  		alignedCol.setWidth(25);
  		alignedColsRow.add(alignedCol);
  		box = new WPanel(Type.BOX);
  		box.add(new WText("Undefined"));
  		alignedCol.add(box);
  	}
docs: Add an example showing column alignment.