[RAc]

I don't understand how my example is a third type of bookmark. 

I am afraid I can't phrase an answer significantly different than I did before: The first kind is bookmarks embedded in pdf documents, the second kind is managed by an app software (MSP), so the ones you mentioned can not be either of the two (since you describe them as being maintained by the reader OS, they can not belong to either documents - kind one - nor apps - kind 2), thus they must logically be a third type.

Nevertheless, let us not continue this debate as apparently I am the only one to raise an issue here. All I am saying is that several of us spent a significant amount of time scratching our heads about the meaning of the term "bookmark" and why we did not succeed in trying to locate individual tunes in multi tune documents using "bookmarks" - even though the documentation explicitly states that that is exactly what "bookmarks" are for. I do not object to MSPs terminology, I just recommend untangling the oerloaded use of the term in documentation to prevent others from falling into the same trap (and thus possibly abandoning MSP out of frustration).

Thanks!