Size unit

Default values:

Name	Alias	Base	Base value
BIT	b	b	1
BYTE	B	b	8
KILOBYTE	kB	B	1000
MEGABYTE	MB	kB	1000
...	...	...	...
KIBIBYTE	KiB	B	1024
MEBIBBYTE	MiB	kB	1024
...	...	...	...