bigstrut – Struts for opening up tabular spacing

\bigstrut pro­duces a strut which is \bigstrutjot higher, lower, or both, than the stan­dard ar­ray/ta­ble strut. Use it in ta­ble en­tries that are ad­ja­cent to an \hline, to leave an ex­tra bit of space.
Note that the tabls pack­age does the job au­to­mat­i­cally, and the book­tabs pack­age has a com­pletely dif­fer­ent mech­a­nism for deal­ing with the prob­lem, which ob­vi­ates the need for man­ual ad­just­ment.