In general, the enhanced ACCEPT/DISPLAY syntax keys are mapped onto the function of the same name. Therefore, the <cursor left> key moves the cursor to the left, the Backspace key erases a character and so on. However, there are some keys that are mapped onto different functions by default.
| Key | Function |
|---|---|
| Carriage return | Terminate ACCEPT operation, function 0 |
| Tab | Move to next field, function 11 |
| Backtab | Move to previous field, function 12 |
| Set Insert mode | Insert Toggle, function 58 |
Therefore, when you press Enter on your keyboard, it terminates an ACCEPT operation, because Enter is mapped onto carriage return, and carriage return causes an ACCEPT operation to be terminated.
Because functions are mapped, you need to reference keys 11 and 12 in order to enable/disable Adis keys 8 and 9 respectively using the x"AF" call-by-number routine.
At this stage, the idea of mapping keys may seem an unnecessary complication. Where it becomes really useful is in the emulation of other dialects of COBOL. For example, in Microsoft COBOL V2.2, the Enter key moves to the next field rather than terminating an ACCEPT operation. This is easy to emulate by simply changing the mapping for key 2 (carriage return) from 0 (terminate ACCEPT) to 11 (move to next field). If you look at the function mappings screen in Adiscf for the Microsoft COBOL V2.2 compatibility configuration, you can see that this has been done.
The RM/COBOL V2.0 compatibility configuration contains even more changes to the default mappings to emulate the action of keys in RM/COBOL.
If a key is mapped on to a value of 255, that key does not perform any function during an ACCEPT operation.