Rule 51. Motion for More Definite Statement
(a) General: If a pleading to which a responsive pleading is permitted or required is so vague or ambiguous that a party cannot reasonably be required to frame a responsive pleading, then the party may move for a more definite statement before interposing a responsive pleading. The motion shall point out the defects complained of and the details desired. See Rules 70 and 90 for procedures available to narrow the issues or to elicit further information as to the facts involved or the positions of the parties.