code: public AsciiTable setPaddingTopBottom(int paddingTop, int paddingBottom){
  		for(AT_Row row : this.rows){
  			if(row.getType()==TableRowType.CONTENT){
  				row.setPaddingTopBottom(paddingTop, paddingBottom);
  			}
  		}
  		return this;
  	}
docs: Sets top and bottom padding for all cells in the table (only if both values are not smaller than 0).
  @param paddingTop new top padding, ignored if smaller than 0
  @param paddingBottom new bottom padding, ignored if smaller than 0
  @return this to allow chaining