Атавизмы в SAP

[№1]

Пришла проблема: поле очищается при нажатии на Enter, данные начинаются с !
Думал, что баг, а оказалось - фича :o
Note 1015345 - Input/output template in screen fields

The ! (exclamation mark) is no special template character. However, it is treated in a special way if it is the first character of an entry. In this case, this character has the effect that the relevant ABAP field in the program is initialized completely, as if you had entered the initial value (000 for numeric fields, for example).
This function originates from the time of alphanumeric terminals and is still active.

Интересно, а где-нибудь еще крутят R/2 на мейнфреймах с алфавитно-цифровыми терминалами?