Kindle stops highlighting after a few clippings

[paperfilm]

I noticed my Kindle doesn't let me highlight in a book or article I'm reading after a few dozen highlights or so. When I restart the Kindle it still does not let me further highlight anything new, though all the previous highlights are saved in My Clippings. Though I can't add any new highlights in that document, I can however continue highlighting in other files and books, so I assume it's an issue with a maximum number of quotes per file?

Anyone have a hunch as to what's going on?

[Ann in Arlington]

I don't do that much highlighting or note taking, but I seem to recall that there is in fact a limit. . . .something like 10% of the book file.  Since one can take the clippings file and copy it to a computer and reformat it for other use, it's a protection against doing something like that with the whole darn book.

[Annalog]

I also remember reading that the amount of highlighting allowed might be set by the publisher. I also remember reading, as Ann said, that the limit, when it exists, is on the percent of text highlighted, not the number of highlights. I have some books where I have a very large number of highlights of small amounts of text. For example, I have been highlighting the first instances of Names (people, locations, organizations, etc.) that I encounter while rereading the Discworld series. I have 246 highlights (plus 17 notes and 2 bookmarks) in The Color of Magic. It did not stop letting me highlight the text. I do not know if this is because I did not hit the limit or if is a limit on this book. (Usually my number of notes far outweighs the number of highlights I have in a book. )