[Mediawiki-l] Image folders

[Juan Rodríguez]

Hi folk,
I studing wikimedia system and there is something I want to know about
images:
Is it possible to upload (and so on store) the images in different folders?
I realised that when you do a normal upload, files are stored in folders
with *arbitrary?* name like: "A", "01", etc. Does anybody know what
programming mechanism is used to allow this? Could it be used to upload
files to different folders?
Thanks.