An internal reader is a logical device. It is a special SYSOUT data set, available to problem programs, which allows jobs to be entered directly into the job stream from other programs executing in the system (for example, from a time-sharing user). Although you control all the internal readers much the same as an input reader, they are not real devices. You can control all internal readers using the $T INTRDR command with certain parameters, but you cannot control individual internal readers. JES2 automatically starts internal readers when they are required. Refer to the internal reader facility information in z/OS JES Application Programming, SA32-0987.

Reader devices not supported by JES2 may be supported by utilities that interface with the JES2 internal reader. For more information, see z/OS MVS System Commands, SA38-0666 .