Soehnle Professional 3020 Mode D'emploi page 31

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Input and control keys
The following keys are available for input and control:
...
6 6
Numeric keys to type in numerical values
Multiple programming of numeric keys to type in alphabetic characters
Calls organisation data
Clears last number
Info key, electronic nameplate with reference data
Scale change key (press in succession)
Call tare memory
Tare key / Cursor down / Cursor right
Zeroing key
Print key / Enter key
On / Off