code: public CellConstraints rc(int row, int col,
              Alignment rowAlign, Alignment colAlign) {
          return rchw(row, col, 1, 1, rowAlign, colAlign);
      }
docs: Sets the row and column origins; sets width and height to 1; set horizontal and vertical
  alignment using the specified objects.<p>
  
  <strong>Examples:</strong><pre>
  cc.rc(3, 1, CellConstraints.BOTTOM, CellConstraints.LEFT);
  cc.rc(3, 1, CellConstraints.FILL,   CellConstraints.CENTER);
  </pre>
  
  @param row the new row index
  @param col the new column index
  @param rowAlign vertical component alignment
  @param colAlign horizontal component alignment
  @return this
  
  @since 1.1