The CARRIAGECONTROL specifier asks what type of carriage control is in effect for a file. It takes the following form:
| 'FORTRAN' | If the file is connected with Fortran carriage control in effect |
| 'LIST' | If the file is connected with implied carriage control in effect |
| 'NONE' | If the file is connected with no carriage control in effect |
| 'UNKNOWN' | If the file is not connected, or if it has an unsupported carriage control type |