IBM System/360 User Manual

• LINE RESET key on an IBM 1052 Printer-Keyboard. (If the
"proceed" light is on, press the ALTERNATE CODING and "6" keys
instead of the LINE RESET key.)
• BREAK key on a Teletype terminal.
If the attention key is also the line-deletion character key and
you have entered any characters in a line of input, you must press
it twice to enter an attention interruption. (You need only press
it once if you have not entered any characters in the line.)
2. Use a simulated attention key:
If your terminal does not have a key that can be used for attention
interruption, you can use the facilities of the TERMINAL command to
simulate the, attention key. The TERMINAL command lets you specify
a string of characters, such as HALT or ATTN, that when entered as
a line of input is interpreted by the system as a request for an
attention ~nterruption. The TERMINAL command also lets you request
an interruption at specified intervals while output is being
produced. The TERMINAL command is described in the section,
"Starting and Ending a Terminal Session".
Note: The attention interruption will not halt the output from system
operator commands, such as DISPLAY A.
The HELP Command
The HELP command provides you with information about all other TSO
commands. At the most general level you can enter:
help
This will cause you to receive a list of all commands and a brief
explanation of their functions.
If you want all the information available on a specific command, for
example CALL, enter the HELP command and use the other command's name as
an operand:
help call
If you want to know only the function, syntax, or operands, of the
CALL command, enter one of the following:
help call function
help call syntax
help call operands
You can also obtain the same information for the subcommands of the
ACCOUNT. EDIT, OPERATOR. OUTPUT and TEST commands. To do this, enter
the command with any required operands and wait for the mode message.
After you have received it, you can enter:
help
This will cause you to receive a list of all subcommands for the command
that you specified.
What you Must Know to Use TSO 19

IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English