Nikon COOLPIX AW100 Reference Manual page 206

File and Folder Names
• When image files or voice files are copied to or from the internal memory or
memory card (E50), the file naming conventions are as follows:
- Files copied using Selected images are copied to the current folder (or to the
folder used for subsequent pictures), where they are assigned file numbers in
ascending order following the largest file number in memory.
- Files copied using All images, along with their folder, are copied together.
Folder numbers are assigned in ascending order, following the largest folder
number on the destination medium.
File names are not changed.
• When the current folder is numbered 999, if there are 200 files in the folder or if
a file is numbered 9999, no further pictures can be shot until the internal
memory or memory card is formatted (E78), or a new memory card is
inserted.
E86