See documentation for the HTML 4.0 (XHTML) table model.
Specifies which sides of the table should be given rules, making a box or frame of lines around the table.
| Value | Meaning |
|---|---|
| above | Rule above only (top). |
| below | Rule below only (bottom). |
| border | Rules on all table rows and columns. |
| box | Rules on all 4 sides. |
| hsides | Rules on horizontal sides only (topbot). |
| lhs | Left-side rule only. |
| rhs | Right-side rule only. |
| void | No border (none). |
| vsides | Rules on vertical sides only (sides). |
| Restriction: This attribute may be specified if the element is used. | |