3.0rc3: List of 'os.', 'os.path.' attribute redundencies ... !! ?

[bMotu]

IDLE 3.0rc3 (using XP)

'/'
'.'
'.;C:\\bin'
'nul'
'..'
';'

'\\'

these - me thinks - should go away:
os.altsep
os.path.curdir
os.path.defpath
os.pathsep
os.sep

these I do not understand:

'nul'

'..'

ciao, motu