BD: Where to put additional files (for PC usage)?

[Johnny_Deep_Down_Below]

I want to create a BD that contains the usual structure for video playback ("BDMV" and "CERTIFICATE", each with its subdirectories).
Apart from that, I also want to include files which can be used on a PC.

What is the proper place for these additional files?
Of course, they should not irritate any BD video player.

I couldn't find anything about that in the official specs...

[Emulgator]

Just a differently named folder in \root (side by side with BDMV and CERTIFICATE) will do.
This is what I use, I call such folder EXTRAS and it worked so far.

[Johnny_Deep_Down_Below]

Do you have any references for that?
There must be some specs somewhere...

"Worked so far" is not very satisfying.

[Ghitulescu]

The BD dropped the ISO9660 restrictions. Under UDF250+ there's no longer a problem, as long as the BDMV/CERTIFICATE folders are present.