25 K / F/ DUE Keys in CFS

CFS maintains internal tables in which all commands entered in the COMMAND field in the second CFS mask, as well as the entries in the FILENAME-SELECT field of the selection mask are saved. The user can recall these entries using the Shift ENTER key, either sequentially with _ Shift ENTER or associatively with string Shift ENTER . Scrolling further back in the memory is achieved by repeatedly pressing the Shift ENTER key.

The CFS Connection Handler also maintains a table containing the Line mode entries for each Connection. The contents of this memory can be activated by entering -< DUE1 or -string< DUE1. Scrolling further back in the memory is achieved by repeatedly pressing the Shift ENTER key.

Within a Connection to a UTM task, asynchronous UTM administration messages should be acknowledged with the DUE2 key. The DUE2 key may not be used by the UTM application for processing purposes. If the DUE2 key has to be used by the application, then the key for acknowledging asynchronous messages must be redefined with the CFS command M L'2307',X'nn'. X'nn' is the ASCII code for the new key to be used. For example, M L'2307',X'3A' will assign the DUE2 function to the K14 key. A list of the codes for the data transfer keys can be found in the "TRANSDATA, 9750 Data Display Terminal, Programmer's Interface".

If no DUE2 key exists on the keyboard:

The keyboard of newer terminals such as the 9748 do not have any DUE2 key. The DUE2 function on these keyboards is achieved by the pressing the combination SHIFT + ENTER.