pick edition — a matched game with no legible edition cues stays version-less by design (never guess) — but you know which printing your box is. This fetches the game's complete version list into a Review ballot; pick yours there.
wrong match (inside the edit panel) — an auto-match landed on the wrong game (same-name impostors happen). This clears the match, re-searches immediately, and returns the title to Review as a fresh ballot of candidates (including same-named sibling editions); manual-id entry is there too for games BGG's search can't find. Note BGG sometimes splits one game's lineage across entries — Wiz-War's early editions and its FFG remake are separate games — so a copy whose edition isn't on the ballot may belong to the sibling entry.
add a game (top of the Titles page) — a game no photo shows: an expansion stored inside a base box, a game away from the shelves. It joins the list like any read (BGG wants base game and expansion as separate collection entries, so boxes that hold both need this for the hidden half), and if a later photo shows it, the sighting merges instead of duplicating.
+search BGG and tick them off (inside the add panel) — for a box holding many games at once, like a compilation of two dozen expansions: search BGG once, tick every one that's in your box, and optionally name the container they all live inside. Each tick lands already matched — you picked it off BGG's own list, so resolve has nothing to re-derive; a pick whose name matches an undecided photo line decides that line instead of duplicating it. Contained games show "where it lives" in the Library, the container lists what's in it, and the shelf-space report knows they take no shelf of their own.
remove (inside the edit panel) — for lines that shouldn't exist at all: a book read as a game, box art misread as a title, or a duplicate read — the same physical copy read differently from two photos, leaving two lines for one box (remove the worse read; the survivor keeps its own photos). This is different from reject on the Review page, which keeps the line visible as "no BGG match" — right for real games BGG doesn't know. And the mirror case — ONE line that's really several physical copies — wants split, not remove.
Undo: each decision is one record in data/title_edits.json, data/title_splits.json, or data/title_removals.json — delete the record and the next rebuild restores the old state.