IBM 2790 Manual page 81

Data communication system
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Transaction nomenclature to be within this space and centered
about the two center lines for each transaction
Nomenclature for each guidance light is to be within appropriate box.
\+
+
+
+
+
+
+
+
+
Release
31
30
27
26
23
22
19
18
15
14
11
10
07
06
02
03
Repeat/
On
Line
C le a r
29
28
25
24
21
20
17
16
13
12
09
08
05
04
Select
01
Transaction
00
In
Card In
Process
Card Reader

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