IBM 1130 User Manual page 688

Section
Subsections Page
90 40
I,
20 10
Discussion of Case II
Here, as in Case I, we take a similar series of
common-sense steps to improve performance:
1. Make the exception subroutines LOCAL.
2. If that still requires SOCALs, consider sep-
arating the program into LINKs. In this case, this
approach did not seem to be too effective.
3. Since SOCALs seem unavoidable, we try to
rearrange our program steps to reduce their effect.