
PROTOCOL CONVERTER MODEL A/S-4 
The functions of the 
| Restart Protocol | Jump to  | 
| Converter | option changes. | 
| Disconnect VDU | Causes  | 
| 
 | Used to disconnect a modem attached to the terminal port in a | 
| 
 | |
| Disconnect SDLC | Causes  | 
| 
 | Used to disconnect a modem attached to the modem port in a dial- | 
| 
 | up configuration. | 
| * Dual or Mono Case | Used to shift between Dual (Upper & Lower Case) and Mono | 
| 
 | (Upper Case only). | 
| * Cent Key | Allows cent ( ) key to be sent to IBM host since most VDU’s do not | 
| 
 | have a cent key. | 
| * Redisplay Screen | Used to redisplay current screen. Used when VDU is attached to | 
| 
 | terminal port through  | 
| 
 | displayed on screen. | 
| * Local Print | Print VDU screen on printer | 
| * Stop/Start Print | Allows stopping of printer to align forms and then starting again. | 
| * Line Insert | Causes a blank line to be inserted at cursor location. | 
| * Line Delete | Causes a line of data to be deleted at cursor location. | 
| * Character Insert | Causes a Null Character to be inserted at cursor location. | 
| *Character Delete | Causes a data character to be deleted at cursor location. | 
*Keys used only during interactive application, not used in batch.
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