Entering a TSO/E command

How you can enter a TSO/E command depends on whether you are using the OMVS terminal interface or the asynchronous terminal interface you get with rlogin, telnet, or the Communications Server.

OMVS terminal interface: You can enter a TSO/E command:

At the TSO/E READY prompt.
In the shell, using the tso shell command. For more information on this command, see z/OS UNIX System Services Command Reference.
In the shell, by typing a TSO/E command at the shell prompt and pressing the TSO function key to run it.
On an ISPF panel.

CAUTION:

You need to be aware of two things about entering TSO/E commands in ISPF:

On most ISPF panels, you must type TSO before the name of the TSO/E command; for example,
```
TSO OBROWSE 3 fopen
```
However, on the TSO Command Processor panel (ISPF option 6), you can just enter the name of the TSO/E command, unless the command exists in both ISPF and TSO (for example, HELP or PRINT).
On most ISPF panels, ISPF folds what you type to uppercase. ISPF folds lowercase or mixed-case file names to uppercase, even if they are enclosed in single quotation marks. However, the TSO Command Processor panel (ISPF option 6) processes what you enter exactly as it is typed—mixed case, uppercase, or lowercase.

Asynchronous terminal interface: You can enter TSO/E commands in the shell, using the tso shell command. For more information on this command, see the tso command in z/OS UNIX System Services Command Reference.