The glosses were written across different periods, as evidenced by the variation in ink color. The Rabbanim of Tzfas, led by Rabbi Shmuel Heller, wrote regarding these glosses: “And here [in Tzfas] were the four volumes of Shulchan Aruch through which the aforementioned author learned, and on their margins he inscribed in his holy handwriting insightful notes to clarify the plain meaning and halacha, with great sharpness.”  | Read More The Yeshiva World