I've tried to number files in subfolders recursively starting at 1 within each folder. This is what I got:<pre>
Origin           Result
+ Folder1        + Folder1
  - abc.txt         - 001.txt
  - bcd.txt         - 002.txt
  - cde.txt         - 003.txt
+ Folder2        + Folder2
  - edc.txt         - 004.txt
  - dcb.txt         - 005.txt
  - cba.txt         - 006.txt
</pre>
And this is what I expected:<pre>
Origin           Result
+ Folder1        + Folder1
  - abc.txt         - 001.txt
  - bcd.txt         - 002.txt
  - cde.txt         - 003.txt
+ Folder2        + Folder2
  - edc.txt         - 001.txt
  - dcb.txt         - 002.txt
  - cba.txt         - 003.txt
</pre>
Is there an option to do the numbering folder wise? I couldn't solve this problem yet. Otherwise it may be an interesting feature to be implemented in any following version.
Anyway: great utility!