Template:Iso1/doc

Drip lines
Wherever you want to add the proton or neutron drip line to the chart, add the option  with one of the values   (top),   (right),   (top-right),   (top-left),   (top-right-bottom),   (top-bottom),   (top-left-right),   (bottom),   (left),   (bottom-left),   (bottom-right),   (bottom-left-right),   (left-right), or   (top-left-bottom) to the cell template Iso1 or Iso2, as demonstrated in the example below. To avoid confusion, only specify drip lines from inner cells.

Or in empty cells: