Rocket 204 - End-Of-Page Pause; Attention Key; Canceling the Current Request

SNA Communications Server Terminal 37
IBM 3270 terminals (IODEV = 7)
With the exception of the RTRVKEY, program function (PF) keys are supported
by Model 204 only when the user accesses a screen formatted through the
User Language full-screen formatting feature (see “Full-screen formatting” on
page 9). Otherwise, PF keys are not supported and cannot be used to enter
data. Any line entered by means of a PF key is considered null, and any data
entered is lost.
End-of-page pause
Model 204 pauses at the end of each output page and waits for the user to
respond before continuing. This allows the user to examine the contents of the
screen. Model 204 prompts with an end-of-page prompt (>), indented 25
spaces.
Valid user responses are:
• Enter a null line (Return). The terminal goes on to the next page.
• Press the attention key (PA1) or enter *CANCEL, C, or K, then press the
Enter key. Unless an ON ATTENTION statement is in effect (see “Attention
interrupt feature” on page 11), the current output and request are cancelled.
• Enter a backpage request (see “Backpaging” on page 7).
• Enter the next input line in anticipation of the next input prompt. The line
cannot exceed 53 characters.
As discussed in the section “Pausing” on page 7, the user can enter only one
line of anticipatory input at this time. If the terminal reaches the end-of-page
pause for the next page of input, the saved input line is lost.
Attention key
The PA1 key serves as the attention key on IBM 3270 terminals, unless the
attention key has been reassigned by the user through the FSATTN parameter.
For more information on the FSATTN parameter, refer to the Model 204
Parameter and Command Reference Manual.
Canceling the current request
When using SNA Communications Server, the evaluation of the current User
Language request can be canceled in one of the following ways:
• When the terminal is waiting for a response from Model 204, the user can
press the attention key (PA1).
• When Model 204 is waiting for input from the terminal or is actively
displaying output on the terminal, the user can press the attention key.
Note: When Model 204 is compiling a request or executing a command, the
user cannot cancel the operation by pressing the attention key.