Machine carriage control characters
Machine carriage controls were originally the actual hardware control commands for printers, and are often used on other systems. Machine controls are binary values, not symbols. They are not represented as characters in any encoding and, therefore, machine controls cannot be translated. Some typical machine controls are listed in Machine carriage control characters.
Machine carriage control characters
| Machine | Action |
|---|---|
| X'09' | Print the line and single space |
| X'11' | Print the line and double space |
| X'19' | Print the line and triple space |
| X'01' | Print the line (do not space) |
| X'0B' | Space one line immediately (do not print) |
| X'89' | Print the line, then skip to channel 1 (top of form) |
| X'8B' | Skip to channel 1 immediately (do not print) |
Machine controls print before performing any required spacing. There are many more machine control commands than ANSI.
Carriage controls can be present in a file, but to use carriage controls at all, every record in the file must contain a carriage control. If the file contains carriage controls but the line2afp command keyword and value cc=no is specified, the carriage controls are treated as printing characters. If no carriage controls are specified, the file prints as though it were single spaced.