Each word (token) such as keyword or parameter is separated by one or more spaces.
The space here means the following.
・ Space code (0x20)
・ Horizontal tab code (0x09)
・ Vertical tab code (0x0b)
・ Home feed (0x0c)
Line feed (0x0a)
Each command line consists of a line feed code (0x0d).

Here is the definition for each command line:
Words not enclosed in <> indicate reserved words or operators that are actually entered.
[CR] indicates a line feed code (0x0d). [SPACE] indicates a space (0x20).
For the exact definition of and , refer to the standard "JIS X 0606".
As a restriction,
:: =
:: =
will do.
Other restrictions will be explained separately.

:: = Disc

[CR]
:: = EndDisc [CR]
:: = LeadIn [CR]
:: = EndLeadIn [CR]
:: = Session

opt [CR]
:: = EndSession [CR]
:: = LeadOut [CR]
:: = EndLeadOut [CR]
:: = CatalogNo [CR]
:: = Track [CR]
:: = EndTrack [CR]
:: = Volume

[CR]
:: = EndVolume [CR]
:: = SystemArea [CR]
:: = PrimaryVolume [CR]
:: = EndPrimaryVolume [CR]
:: = SupplementaryVolume [CR]
:: = EndSupplementaryVolume [CR]
:: = BootRecord [CR]
:: = EndBootRecord [CR]
:: = Pause [CR]
:: = PreGap [CR]
:: = PostGap [CR]
:: = Empty [CR]
:: = Directory [CR]
:: = EndDirectory [CR]