The pioformat formatter driver provides the following subroutines for the print formatters that it loads, links, and drives:
| piocmdout | Outputs an attribute string for a printer formatter. |
| pioexit | Exits from a printer formatter. |
| piogetstr | Retrieves an attribute string for a printer formatter. |
| piogetopt | Used by printer formatters to overlay default flag values from the database with override values from the command line. |
| piogetvals | Initializes a copy of the database variables for a printer formatter. |
| piomsgout | Sends a message from a printer formatter. |
Understanding Embedded References in Printer Attribute Strings.
Printer Addition Management Subsystem: Programming Overview.
Adding a New Printer Type to Your System.
Subroutines for Writing a Print Formatter.
Adding a Printer Formatter to the Printer Backend.