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must be taken to see which of the other runs done independent of
There is a good composite run (3x/4)x 2x ; if used, care
JJJ Good on language (bad if /
333 Good on language (bad if 5
999 Good if 5 is frequent.
On Colossus II (and later Colossi) it is posible, by use
of the double negation, to run an accumulation of good letters all
added together. Opinions about the advisability of this are divided.
The set total is normally taken at 1.5 sigma, but for difficult
messages 1 sigma (or even 0.5 sigma) is sometimes used, thus enables
one to detect settings which often score but never spectacularly.