<table>
<tr> <td>row with column</td></tr>
</table>
a table formatted with horizontal lines is called
The lines on a table tennis table have no purpose when playing singles.
there are no foul lines for singles in table tennis, but for doubles you are only allowed to serve from the right half of your side of the table to the opponents right half (cross court/table).
Groups are the verticals and periods are the horizontal lines
The contours of the water table lines are the same as the contours of other topographical lines. The only indication of water tables might be elevation lines but they are not unique to water tables.
That depends on what information is in the table. Also, what the lines are.
Gridlines
... in an unreal universe. In our universe, a typical table top will be perpendicular to the table legs, not parallel. The table legs will generally be parallel with each other.
guidelines
columns are the horizantal lines and groups are are the vertical lines
Groups
you go into insert and you click on table. how dumb are you