Why are ther a couple of folders created with a starting "!", e.g. one (merged) project here starts with a "!",
under it !SSL!, !Language!, etc.
The ! prevents command line completion when being at the command line as I find.
So what's the mystery behind this naming convention?
It's deliberate to keep the project files separate from the output files
While I agree the project files should always be kept separate from the output files, I have to say I disagree with the naming reason. I'm not even sure Adobe may know the why's and Wherefores of the surrounding bang symbols ( ! ).
One guess is that it forces the folders to be listed at the top of the list when viewing the files in Windows Explorer.