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K1: General Return Key
K1 K1 K1
Display Mode ---> File List ---> Selection mask ---> End CFS.
In addition, pressing K1 will terminate EDT (F Mode), the Help Text display, as well as any further I/IM Action processing.
If the Command Memory has been activated in the CFS main task, or in a Connection, pressing K1 will abort the display of any further stored commands.
If the user presses the K1 key in a menu (Administration of Connections), a branch will be made to CFS, if the "CFS" option is allowed for that user in the menu file.
Within a Connection, pressing K1 in Step Mode of a RES command will result in the termination of the RES process, i.e. no further entries will be read from the log file.
K2 Key
A lengthy Search Command can be interrupted by pressing the K2 key (branch to the BS2000 command level), and then entering /INTR R. The display will be positioned at the record last read.
A Wait Condition, initiated by pressing the K2 key can be interrupted by pressing the K2 key.
In Connections, switching from one Connection to another, or from a Connection to the main CFS task is controlled by the K2 key. After pressing the K2 key, the question "Return to CFS / Continue in Conn. n / Break ? (R/n/^n/B)" will appear.
In Phantom Mode of the RES command, pressing the K2 key will result in any unelapsed wait time for a dialog step being set to 0.
K3 Key
CFS Editor: Pressing the K3 key in Query Mode of the commands Search and Replace (S,'...'='...',Q), Search and Write (S,'...'=W file,Q), Search and Delete (S,'...'=D,Q) will suppress the operation and move to the next search result. In contrast, pressing the DUE1 or ENTER key will perform the operation and move to the next search result.
Pressing the K3 key during line output of the command memory (DUE2 function) will cause the displayed entry to be deleted from the command memory. The command memory display will then be positioned on the previous entry.
In the Job Report mask, the K3 key has the identical function to the NJR command.
In the test compare system (RES ...,C), pressing the K3 key will first display the original file, then the differences between original and current output.
Pressing the K3 key in the Help system will cause the previous information segment (menu point or field description) to be displayed again.
In the FT (FT-BS2000 or RDAC) mask, pressing K3 will perform a screen refresh, as in EDT.
F1 Key
In the Display/Modify mode of CFS, pressing F1 has the same effect as K1, namely returning to the file list (equivalent to the LST command). In contrast to the K1 key, however, the last amendments made on the screen will not be lost; they will be written to the file.
After erroneously ending EDT (pressing the K1 key after the Action Code EDFn), pressing the F1 key will return the user to the last stage in EDT before the K1 key was pressed. This is only possible if no new file list has been selected.
In the Help System, the F1 key will display the next page of a Help menu.
In the Phantom Mode of the Restore process, the user can move the dialog by n steps forwards or backwards by first clearing the screen, then typing +n/-n/++/-- in the top left corner, and finally pressing the K1 key.
F2 Key
When displaying a file list, pressing F2 will make all the files in the list overwritable for renaming purposes.
In Display mode, F2 will make the file modifiable.
In Step mode of the RES command, F2 will result in the LOG file not being read further, i.e. the internal record pointer remains at the same record. This record will be displayed again in the next RES step. In this way, the user can insert additional entries into a RES run.
In the Help System the F2 key has the identical function to the MEN command (display the previous HELP menu).
F3 Key
Pressing the F3 key in the CFS main task will capture the current screen to a Hardcopy file. For a hardcopy function in Connections via a single function key, see the CH command (Connection Hardcopy) on page 18-.
It should be noted that if a hardcopy is created using the F3 key, or with a key defined by the CH command, each screen will appear on a new page. In normal hardcopy mode (HC command), a hardcopy file with multiple screens per page can be created.
Transmitting a CFS mask with F3 will be handled, depending on the logging, as if DUE1 had been pressed. When producing a hardcopy from a Connection by means of a key defined with a CH command, the input will be lost, and must be re-entered and transmitted with DUE1.
In Step Mode of a RES command, pressing the F3 key will switch control back to batch mode of the restore process (i.e. back to automatic mode).
Shift ENTER: Scroll back in the Command Memory
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.
DUE1 / ENTER: normal data transfer
All CFS masks are normally transmitted with the DUE1 key. On newer keyboards, this is marked ENTER.
Using the End marker ( < ) within a mask will result in the characters to the right and below the end marker not being transmitted. CFS will assume blanks for this untransmitted data.
Examples:
Deleting all Action Codes from a mask is achieved by entering -0< DUE1 in the command field.
Amending data will likewise not be achieved if an end marker appears in the CFS command field. If an end marker is specified within the Modify area of a CFS mask, then only that portion of the screen to the left and above the end marker will be used when writing away the data. Amendments to the data in other portions of the screen will not be saved.