tag 'script' to print out DISC 1, DISC 2.. etc Options

[joshuatm]

hi, i had a look through the wiki at conditional tagging, and i tried looking on google, but i'm still stuck.
i make a lot of use out of foobar's 'file operations' menu, i use the 'move to' option, and use it to organize my music into folders that makes everything more managable.

at the moment i have something like this:

CODE

%album artist%/%album%[ '('%date%')']/%tracknumber% - %title%

i'm not sure why the date in enclosed in the square brackets, but it has been like that for months and it works
could anyone explain what the square brackets do?

i have a problem when i come across a release with multiple disks, it wants to put all of the tracks in the one release directory.

i want something like this:

album artist
-album (date)
--DISC 1
---01 - etc etc etc.flac
---02 - etc etc etc.flac
--DISC 2
---01 - etc etc etc.flac
---02 - etc etc etc.flac

i was hoping that someone could help me with the syntax/code to make this possible
is it possible to ignore the disc folder if there is only 1 disc? as in, if the disk total tag, or whatever it is called, is 1, or empty, then to simply ignore making the disc subfolders?

thank you very much for this, i appreciate it!

p.s. also, what is the difference between using $meta(something..) and %something%? are they interchangeable?
thanks again