| previous page
| next page | index page |
- 58 -
ONE-PART :
(of code-books). Alphabetic, and so not requiring a separate decode
section.
ONE-TIME :
(of subtractor, esp. pad-subtractor). Designed to be used only once.
OPEN-SPELL :
A code-group used to introduce spelling groups.
ORIGINATOR :
The (official) writer or sender of a message.
OUT :
(of a code-book). Solved or reconstructed.
OUT-STATION :
Any station in a star other than the control station.
OVERLOAD :
To use (a subtractor or any part of a subtractor) so often that it is
possible to set a sufficient number of messages in depth to strip off
the subtractor and solve the code; to impair the security of by over-
use.
P5 FUNCTION :
PAD :
A set of different subtractors each occupying one page of a pad, from
which successive pages can be removed and destroyed, usually as soon
as they have been used once.
PAGE :
The page-number of a code-book (in the case of two-part codes, the page
number in the second part or decode section) forming usually either two
or three figures of the code-group, the remaining figures of the group
being those of the margin.
PAIR DAY :
(in certain Enigma keys). Either of two consecutive days so related
that the letters which are steckered on the one are unsteckered on the
other.
| previous page
| next page | index page |
