> Even basic 1px horizontal line takes 10px of height or whatever. Places where 1 or 2 px padding could do will use full cell instead. This is not true; there

> Even basic 1px horizontal line takes 10px of height or whatever. Places where 1 or 2 px padding could do will use full cell instead. This is not true; there is an underline attribute which can add a ~1px horizontal line without taking up any additional space.