A Practice Note setting out the key issues that counsel must consider before using interrogatories in an Ohio state lawsuit under Rule 33 of the Ohio Rules of Civil Procedure. Specifically, this Note discusses the purposes of interrogatories, the rules governing interrogatories, who may use interrogatories, who may be served with interrogatories, the limit on the number of interrogatories a party may serve, what information can be requested through interrogatories, the best use for interrogatories, and when to serve interrogatories.