When Valenzuela was appointed the physician-general of the Katipunan, he passed on his editorial duties to Jacinto. Jacinto edited the articles after his pre-law classes in University of Santo Tomas. Since the press was in the old orthography and not in the new "Germanized" alphabet, as called by the Spaniards, there were no Tagalog letters such as "k", "w", "h" and "y". To solve this problem, Jacinto obliged his mother, Josefa Dizon, to buy typefaces that resembled such letters. The typefaces used in its printing were purchased from publisher Isabelo de los Reyes, but many were taken surreptitiously from the presses of the "Diario de Manila" by Filipino employees who were also members of the Katipunan.