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Collections in Cryptology - Tables
Key mechanisms in computation...

Tables provide an abbreviated form of communication which forces commanders
to categorize their commands into commonly used phrases.
British Artillery Code (1939)
A table of frequently used commands, printed on cloth.

British SLIDEX
In addition to the table of frequently used commands, printed on a series of cards, which can be changed from time to time, index strips are provided with blank spaces into which coded designators may be entered in pencil or ink on a daily or weekly basis.