Re: interesting use of NEXT SENTENCE vs. CONTINUE

> When you are looking at a paragraph there is no indication that the label
> is the target of fall-through code, a PERFORM, a GO TO or a GO TO
> DEPENDING ON;

When looking at a paragraph label one can be sure that it _is_ the
target of one of: fall-through, goto, or perform, or else it is
unreachable code.

The actuality of the label triggers the need to determine which of
these potential constructs are actual paths.

>but I,
> personally, believe that code is to be read in context; I would say that
> trying to fix code that is not read in context is more of a bug-trap than
> any NEXT SENTENCE construction with which I am familiar...

Exactly, but the next programmer to work on this must either examine
the code using every possible context that can be constructed using
Cobol or will do so using a subset of contexts that: he is familar
with; are the site standard; he has seen before.

If someone is not familiar with the abuse that may be done to a NEXT
SENTENCE in the way shown then it will not be in his list of 'contexts
I need to look for'. OTOH if he is to examine every possible context
then each full stop will require a scan for a next sentence above, and
every GOTO will require a scan for an alter.

In a similar way the elimination of GO TO and THRU is a mechanism to
reduce the number of contexts so that the program can be more easily
understood in smaller pieces.

.

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