This version of DFU uses Screen Management (SMG) routines to perform output. DFU will automatically select SMG unless the terminal does not have SMG capabilities, if DFU is executed in a batch job or if the logical DFU$NOSMG is defined. In any of these 3 cases DFU will switch to normal line oriented output.
1 – Line Mode
DFU can be forced to line mode output by defining the logical DFU$NOSMG to any value.
2 – Special Keys
In SMG mode the following keys perform special functions (Keys between () are keys on a PC keyboard) : o CTRL/W : Redraws the screen o HELP or PF2 (/) : Invokes the help facility o PF4 (-) : Dumps the screen contents to file DFU_SCREEN.TXT o PREV_SCREEN (PageUp) : Scrolls the output window back (one screen) o NEXT_SCREEN (PageDown): Scrolls the output window forward (one screen) o INSERTHERE (Insert) : Scrolls the output window back (one line) o REMOVE (Delete) : Scrolls the output window forward (one line) o SELECT (End) : Toggle between 80/132 columns o UP/DOWN : Recall command buffer
3 – Paging-output
In SMG mode the /PAGE qualifier will present output page by page. This may be handy for some commands which produce a large amount of output (SEARCH, REPORT).