Roam Research-style merge of notes
Sometimes duplicate notes on the same or similar topics are created and it makes sense to merge them so that the backlinks are in one place and the graph becomes richer.
Roam Research does this in perhaps the easiest way -- by renaming one note to have the same name as another, it will ask "Note already exists. Merge?" If you click Yes, the notes are merged and that's that. (going by memory on the specifics of Roam, as I use Amplenote now :) )
Alternatively, I would recommend an Evernote-style merge which simply concatenates the selected notes and combines them into one long note.
The title of each individual note is inserted as a large heading so it can be identified in the resulting longer document. If a merged note has a referential link (such as the source of a web clip) that URL is included below the note title.
The new note of merged documents is then retitled to that of the note which was at the top of the list of original documents selected for merge. The new note can easily be retitled if so desired.
An unlimited number of documents can be merged into one note by selecting multiple items in the note preview pane and selecting the Merge option in a right-click context menu.
It's an extremely handy feature and I use it more than I knew...it turns out that I really miss it in Amplenote!