4 Rocket Model 204 Terminal User’s Guide
Retrieving input
If the value of INMRL is greater than the value of INCCC, and a nonblank
character is in the column position specified by the INCCC parameter, any
characters past this column position are lost. IF INCCC is set to zero, lines
cannot be continued by using the INCCC facility; however, these lines can be
continued by using hyphens.
Note: Any attempt to enter input while a terminal is displaying a line of output
produces unpredictable results.
Retrieving input
For all 3270 or compatible full-screen terminals, previously-entered line input
can be retrieved for review or modification by using a PF key. Full-screen Editor
or User Language screen input, however, cannot be retrieved in this way.
Retrieved input lines are returned to the command line of the user’s terminal
from where they can be reissued.
RETRVKEY parameter
For a 3270 or compatible full-screen terminals, setting the Model 204
RETRVKEY parameter to a value from 1 to 24 designates a PF (program
function) key whose number equals that value as the user’s Retrieve PF Key.
For example, RETRVKEY = 3 means that PF key 3 is the Retrieve PF Key.
Using the Retrieve PF key
If the Retrieve PF key is pressed when Model 204 requests a new input line
from the user’s terminal, Model 204 displays the user’s most recently entered
input line. The user can then perform any of the following actions:
• Press Enter; the unmodified input line is sent to Model 204.
• Using the 3270 cursor, insert, and delete keys, and the normal character
keys, modify the input line and press Enter. The modified input line is sent
to Model 204.
• Press the Retrieve PF key again. Model 204 displays the input line
preceding the one just displayed, and the user can repeat any of the actions
in this list.
Only a limited amount (as many as 268 bytes) of the user’s previous input is
available for retrieval. The input lines are kept in a circular format: if the
Retrieve PF key is pressed enough times to display the oldest available input
line and then is pressed again, the most recent input line (the first retrieved) is
redisplayed and the entire sequence begins again.
Irretrievable input
Input for which or situations in which the Retrieve PF Key does not work are
listed below. The following input lines are not saved for retrieval:
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