Slic3r config bunble

In Slic3r

What is a "config bundle"?
How does one use it?

Is this a way to bundle config settings for a particular printer under one bundle?
How to bundle them? How to select them for the printer in use.

I have just had a look at the .ini file that the 'export config bundle' function produces (you can examine it with something like Windows NotePad), and it is a complete set of configs from the Slic3r config directory (on Windows this is {user}/AppData/Roaming Slic3r). It could be used to copy a complete config set from one PC to another, or to backup it up.

Presumably 'load config bundle' would restore the config set.

You can achieve a similer thing by copying the folder {user}AppData/Roaming/Slic3r/ with all of its subdirectories and files. But the the above function would be much more convenient.

Harvey