On the 18th of March, on the sidelines of the section on pre-Angkorian inscriptions supplemented for the occasion by new presentations, the National Museum of Cambodia proposes a "focus" on the inscribed jamb (K.127) engraved with the date 604 of the śaka era (ie 682 AD), with the first known graphical representation of the zero in Khmer country. The program Corpus of the Khmer Inscriptions (CIK) of the EFEO contributed a lot to the writing of the notes.