(In Contrast to General procedure, the Message Setting
is not formed from the Procedure Indicator Group and
the Grundstellung, but is taken directly from the Offizier
or Staff Day Setting.)
In the case of several messages per Offizier or Staff procedure,
different Message Settings are to be used whenever possible.
4. The chosen Message Setting is to be set up on the windows of
the Enigma from left to right - for example in the case of
Message Setting DFL, D at the left window, F at the center, L
at the right.
5. The P/L text of the message is to be prepared as per "Schluessel-
anleitung zum Funkschluessel M - M.Dv. Nr. 32/1."
Addresses and signatures are not taken into consideration here.
6. The P/L text, prepared as per paragraph 5, is to be enciphered
The keys having the same letters as those of the P/L text
to be enciphered are pushed all the way down, one after the
other, and the letters which light up are entered under "Radio
A key must not be pressed down until the preceding one
has come completely to rest.
In this way all letters of the prepared P/L text are
selected separately and by lines from left to right out of the
column "Book Groups" ("Buchgruppen") and enciphered. The
cipher letters (Schuesselbuchstaben) are then entered by lines
in groups of four into the column "Radio Groups" ("Funkgruppen").
7. Should a wrong key get pressed by mistake, then the right wheel
is to be turned back several steps, and the ciphering of as
many letters is to be repeated - including the wrongly pressed
one - as the number of steps the wheel was turned back.
In this process care is to be taken that the wheels retain
their correct settings. This is done by comparison with
the last correctly enciphered letter.
If necessary, not only the right wheel, but also the middle
one and, if the occasion arises, the left one, are to be turned
back the same number of steps as they had advanced during the
previous enciphering which is now to be repeated.