Library sort options.

After I tried different sort options like title a to z or titles z to a or just read last and like that, I realized that my favorite sort option was the default option of putting the the added files in the order in which they were added, but that option doesn't seem to appear now on the screen and I don't know how to return to that sort order (the order that they went into automatically in the first place).

If as I get the impression that that it's not possible to return to that sort order (or at least I don't know how to do it) If it's not possible to return to that sort order then I think adding that sort order as a sorting option would be very valuable. Thank you very much.

I personally think this this app is just amazing. I am just amazed how valuable it is.

Thanks very much