The classes.conf file defines the local printer classes that are
available. It is normally located in the /etc/cups directory and
is generated automatically by the cupsd(8) program when printer
classes are added or deleted.
Each line in the file can be a configuration directive, a blank line,
or a comment. Comment lines start with the # character.
<Class name> ... </Class>
Defines a specific printer class.
<DefaultClass name> ... </Class>
Defines a default printer class.
Specifies whether the printer is accepting new jobs.
AllowUser [ user @group ... ]
Allows specific users and groups to print to the printer.
DenyUser [ user @group ... ]
Prevents specific users and groups from printing to the printer.
Specifies the error policy for the printer.
Specifies human-readable text describing the printer.
JobSheets banner banner
Specifies the banner pages to use for the printer.
Specifies the job-k-limit value for the printer.
Specifies human-readable text describing the location of the printer.
Specifies the operation policy for the printer.
Specifies the job-page-limit value for the printer.
Specifies a printer that is a member of the printer class.
Specifies the job-quota-period value for the printer.
Specifies whether the printer is shared.
Specifies the initial state of the printer (Idle or Stopped)
Specifies the message associated with the state.
Specifies the date/time associated with the state.