Thank you.
I was going to write that it means the destination file will have the missing 3 bytes appended.
OK, and what does it mean when those bytes are appended to that file? Is there a way to get the identical file in destination like the source file, so the identical (content) copy of the source?
That comes from the requirements related to the n-buffering operations, where reads and writes has to be aligned to a sector size boundary (CH uses 4k blocks). In this case, when you schedule "append", ch rewinds the destination file to the nearest multiple of 4k, and then appends the data.
Basically it comes down to the naming of the button. It should be named something like "Resume copying". I'm filing it under https://dev.copyhandler.com/browse/CH-316
Very sorry, I have any idea of anything, so I cannot understand that, seems to be for experts only. Actually I would not know what "Resume copying" (exactly) means, start copying the file (or more or whatever) again? From the beginning, start again to copy the rest? Or so?
Many thanks, also for the link