| previous page
| next page | index page |
- 53 -
MAJOR GROUP :
That one of two code or cipher groups which gives the minor difference
when the other group is subtracted from it.
MAKE :
To transmit (a message) by W/T.
MAKE UP :
(of a crib). To provide a series of constatations of a specified
(favourable or unfavourable) character, depending on the number and
length of the chains and closures present.
MAP FIX :
A determination of the position on a map, usually of a W/T transmitter,
from D/F bearings.
MARGIN :
Those figures (or letters) of a code-group which determine the position
of the group on the page (in two-part codes, in the second part or
decode only) as distinct from those which determine the page on which
it occurs.
MASK :
(in the breaking of Enigma keys when the stecker is known). A form
of search-stencil having desteckered constatations punched on it, used
on an inverse-rod square (or having steckered constatations punched on
it and used on a Wylie-box) to determine rod-pairings and so leading
to the breaking of the other elements of the key.
MASTER :
MASTER-CARD :
(in Freebornery). A Hollerith card on which a maximum amount of
information is hand-punched from originals (esp. cipher messages),
and from which such excerpts as are required for any particular
analysis can be a electro-mechanically reproduced.
MATE :
To match or fit (a crib).
| previous page
| next page | index page |
