; This is a comment. If it is at the beginning of a line, no leading white space is required. File A; This is also a comment. There is a space between A and; File A; If there is no space between A and;, it will not be recognized as a comment.The following describes some of the parameters specified in the command that determines the disk configuration.
● Relative position within the session
The position on the disc is expressed as "relative position within the session". The relative position in the session is represented by the minute, second, and frame values separated by “:” (colon), and the time immediately after LeadIn ends is 00:00:00. I mean.
In the actual disk image, it is converted to an appropriate address according to the position of the session.
Relative position in the file
When specifying the position in the file, specify the relative position from the beginning of the file. The format is “minute: second: frame”. In other words, the beginning of the file will be 00:00:00.
● Identifier
Several identifiers are specified in the volume descriptor set definition.
In the primary volume descriptor, it is represented by a sequence of alphabets (uppercase), numbers, and underscore characters. Kanji codes can be used in the auxiliary volume descriptor. When using Kanji codes, the code system to be used is determined by discussion between the disc user and the producer.
● Date
The date is expressed in the form of year (YY), month (MM), day (DD) in the form of DD / MM / YY, followed by a space, and the time is specified in the form of hh: mm: ss: cc: gg . Where hh is the hour, mm is the minute, ss is the second, cc is the hundredth of a second, and gg is the difference (GMT) from Greenwich Mean Time (GMT). In Japan, gg is 36 because the time difference from GMT is +9 hours.
● (ISO9660) file name
An ISO9660 file name consists of the file name and version number connected with a semicolon (;) between them.