California Code, Penal Code - PEN § 853.9

(a)(1) If written notice to appear has been prepared, delivered, and filed by an officer or the prosecuting attorney with the court pursuant to Section 853.6, an exact and legible duplicate copy of the notice when filed with the magistrate, in lieu of a verified complaint, shall constitute a complaint to which the defendant may plead “guilty” or “nolo contendere.”

(2) If the defendant violates his or her promise to appear in court, or does not deposit lawful bail, or pleads other than “guilty” or “nolo contendere” to the offense charged, a complaint shall be filed which shall conform to the provisions of this code and which shall be deemed to be an original complaint; and thereafter proceedings shall be had as provided by law, except that a defendant may, by an agreement in writing, subscribed by him or her and filed with the court, waive the filing of a verified complaint and elect that the prosecution may proceed upon a written notice to appear.