Jun 26
previous/next location (navigation history)
Keeping history of visited location (like temporary bookmarks), with icons/commands : [keep][previous][next][clear] == [!][<][>][x] to navigate back and forth part of the document, like "a few fingers" can keep pages "instantly accessible" while working inside a "real" book.
A list-box (like the bookmarks list box) would be convenient, with selected text as a label for a "kept location".
This should be an "application, per document" feature, with [keep] locations stored in an "ini-like" file, not to pollute the document's proper "bookmarks and annotation". With the [keep] memorized location stored through time, it is a memory of the "work session" inside the documents.
It could then be "quite easy" to convert "kept locations" into permanent "annotation" inside the pdf ... if needed.
Completed
We already have that. See `CmdNavigateBack` and `CmdNavigateForward` in https://www.sumatrapdfreader.org/docs/Commands