Shift Key; Cmd Key; Resend; Execute Key - IBM 5100 Communications Manual

Shift Key
Holding down the shift key and then pressing ATTN stops the TAPEIN or AUTO
operation before the next transmission and opens the keyboard for input.
CMD Key
Holding down the CMD key and then pressing ATTN returns the 5100 to the home
state. This key is only to be used if the 5100 cannot be returned to the home state
from the process (PROC) state by pressing only the ATTN key.
RESEND
When you are using the APL.SV translation with the
~SYSTEM
command and the
remote system transmits RESEND, you can interrupt the retry operations by
pressing ATTN while the 5100 is receiving the characters RESEND.
EXECUTE KEY
During a transmit operation, pressing the EXECUTE key transmits the new-line and
end of transmission characters. During an edit operation, pressing the EXECUTE
key transmits the edited line and the new-line and end of transmission characters.
If you press the EXECUTE key after a command is entered, the command is
processed.
HOLD KEY
Pressing the HOLD key at any time during communications stops the operation as
soon as possible and displays the characters HOLD in position 2 to 5 of the status
line. You can continue the operation that was stopped by pressing the HOLD key
again. When pressed with the CMD key, the HOLD key stops all operations
immediately and may require reloading of the communications program.
SPECIAL FUNCTION KEYS
The top row of alphameric keys and several numeric keys have a special function in
communications. Hold down the CMD key and press the appropriate key to
activate the special function, which is as follows:
Command Character
CJ
The command character is displayed as
~
and identifies a communications command.
It can be entered only when the 5100 is in the home state; in any other state the
command character is ignored.
Operation of Keys 9