Another evidence cited in favor of Persian influence has been the Hultzsch proposal in 1925 that the Prakrit/Sanskrit word for writing itself, lipi is similar to the Old Persian word dipi, suggesting a probable borrowing.[4][2] A few of the Ashoka edicts from the region nearest the Persian empire use dipi as the Prakrit word for writing, which appears as lipi elsewhere, and this geographic distribution has long been taken, at least back to Bühler's time, as an indication that the standard lipi form is a later alteration that appeared as it diffused away from the Persian sphere of influence.