code: public CellConstraints rchw(int row, int col, int rowSpan, int colSpan) {
          return rchw(row, col, rowSpan, colSpan, DEFAULT, DEFAULT);
      }
docs: Sets the row, column, height, and width; uses default alignments.<p>
  
  <strong>Examples:</strong><pre>
  cc.rchw(1, 3, 2, 1);
  cc.rchw(1, 3, 7, 3);
  </pre>
  
  @param row the new row index
  @param col the new column index
  @param rowSpan the row span or grid height
  @param colSpan the column span or grid width
  @return this
  
  @since 1.1