What is the ADF file feature in yy-chr?

I've been using yy-chr for quite some time now, and I've pretty much figured it all out, but I don't have any idea what that ADF file save/load is for under the palette menu. Am I missing some useful functionality for editting NES or is it just for some other system?

Think of an ADF file as an custom layout file, as it remaps the tile's layout for use in other games, lets say you are working on a SMB1 hack and want to rearrange tiles without harming the original 8x8 layout, You can make a new layout by editing it to conform to your arrangement standard

Example:



in 8x16 mode, from the default ADF file, turns into:

It took me a few days to try fiddling about with it to understand what you said. What I noticed is that what you said I already knew and used, it's the pattern arranger. What I didn't know is that the two features were related. You were talking about the pattern arranger in which you can choose default arrangements from and edit or create a new one.

My question was regarding the ADF file save/load feature so I was puzzled by your answer. I had noticed the pattern arranger didn't work between sessions even though I "saved" my new pattern in the arranger popup. So I thought maybe that's what the adf file save/load feature did, and yes, that's what it does. Thanks for hinting me in the right direction!

There is nothing indicating these features are related which is why I was confused. What does "ADF" stand for anyway?