General Report on Tunny
24F Page 128
Because the number of places where ΔD1 = x, ΔD2 = x varies from cell to cell (and in addition ΔΧ1, ΔΧ2 may be 'doubted') the depth cannot be made constant, so that even if Colossus is used 3 + 4x / 1x2x and 3 + 4. / 1x2x must be printed separately, preferably in alternate lines and distinctive colours, and the differences found by hand. Although the other methods can be applied Colossus preferred because it avoids auxiliary tapes.
Colossus switching. (c.f. 1+2 rectangle)
Count text, and check 1 + 2 = .
Chi-patterns (triggers) Cross in 02, 02 of Χ3, Χ4.
ΔΧ1, ΔΧ2 in Χ1, Χ2 triggers
Doubts in special patterns Χ1, Χ2 triggers.
| Plugging | (everything plugged goes to all counters) | |||
| Special pattern Χ1 = . | 
| It is improbable that there will | ||
| Special pattern Χ2 = . | be no doubting | |||
| Check effective text | |
| ΔZ1 + Χ1 = x | |
| ΔZ2 + Χ2 = x | |
| Check "R" | |
| ΔZ3 + ΔZ4 = x. |
Selection switches Q = Χ
| Q Panel | Χ3 = x in all counters | |
| Multiple test impulses R1 R2 R3 R4 R5 into counters 5, 4, 3, 2, 1, respectively | ||
| Control panel | Multiple test switch to X4 | |
| Rectangle switch to "Print Scores" | ||
Rectangling gadget Carriage return on Χ4
Do not switch a depth
Settings Χ1 = 41, Χ2 = 31, Χ3 = 02, Χ4 = 02
After setting wheels replace Χ3, Χ4 plugs in 01, 01, without resetting
Step Χ4 fast (lower switch down) to control Χ3 (lower switch up)
Printer Triple line feed
Final checks Repeat first and last rows
Re-run with ΔZ3 + ΔZ4 = . instead of x
(For an attempt to avoid the separate printing of x and . see R3 p 11.)
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