Question mark

Some line mode TSO/E messages have layers of additional messages. To see an additional message, enter a question mark (?) under the original message on the extreme left side of the screen. If no message is available, you see:

NO INFORMATION AVAILABLE

Exercise
After the READY message, enter: `HELP for` You then see: `HELP NOT AVAILABLE+ READY` Enter a `?` after the READY message to see another message: `READY COMMAND FOR NOT FOUND, FOR MORE HELP ENTER HELP READY` If you enter another `?`, you see: `NO INFORMATION AVAILABLE`