Many years ago, the Administrative Office of the Court prepared a standardized form to be used in all cases where a defendant pled guilty to a crime.  The purpose of the form was to advise the defendant of the consequences of his/her decision to plea guilty, so as to insure that the plea was grounded upon a knowing and intelligent waiver of certain basic rights provided to all people accused of a crime.  By necessary implication, the standardized plea form, which was signed by the defendant, prevented the prospects of having a defendant move to vacate a guilty plea grounded upon a claim that the defendant did not truly understand the implication of the guilty plea.