1. All informations must be filed in the court having jurisdiction of the offenses specified therein, by the Attorney General when acting pursuant to a specific statute or by the district attorney of the proper county as informant, and his or her name must be subscribed thereto by him or her or by his or her deputy.
2. The district attorney or the Attorney General shall endorse thereon the names of such witnesses as are known at the time of filing the information. The district attorney or Attorney General shall not endorse the name of any witness whom he or she does not reasonably expect to call.
3. In all cases in which the defendant has not had or waived a preliminary examination there must be filed with the information the affidavit of some credible person verifying the information upon the personal knowledge of affiant that the offense was committed.