Geresh, gershayim, and abbreviations

Rabbinic and commentary printing uses geresh and gershayim heavily in abbreviations. רש״י is the familiar abbreviation for Rashi; ד״ה marks dibbur hamatḥil, the opening words on which a comment is focused; וכו׳ means “and so forth.” Later commentary lessons expand the abbreviation inventory. Here the goal is to recognize that these punctuation-like marks often signal compressed words or names.