1. Only needs to provide D with notice to charges they have to defend against.
2. D may request a bill of particulars, clarifying what gov intends to prove. Generally in court's discretion to urge that, though, and in how much detail.
3. Objections:
a. Duplicity: Count contains two or more distinct offenses
4. Cures for defects:
a. Amendments
b. Supersedments
5. Variance: Proof at trial's different from what was charged in indictment--and D didn't know. If extreme, D may get new trial.