If you see no frames around the tables in these examples, your browser is too old, or does not support it.

With frame="border":

First Row
Second Row

With frame="box":

First Row
Second Row

With frame="void":

First Row
Second Row

With frame="above":

First Row
Second Row

With frame="below":

First Row
Second Row

With frame="hsides":

First Row
Second Row

With frame="vsides":

First Row
Second Row

With frame="lhs":

First Row
Second Row

With frame="rhs":

First Row
Second Row