-/* Implementation details:
-
- The S?SS manuals do not specify the order that COUNT subcommands are
- performed in. Experiments, however, have shown that they are performed
- in the order that they are specified in, rather than simultaneously.
- So, with the two variables A and B, and the two cases,
-
- A B
- 1 2
- 2 1
-
- the command COUNT A=A B (1) / B=A B (2) will produce the following
- results,
-
- A B
- 1 1
- 1 0
-
- rather than the results that would be produced if subcommands were
- simultaneous:
-
- A B
- 1 1
- 1 1
-
- Perhaps simultaneity could be implemented as an option. On the
- other hand, what good are the above commands? */
-\f
-/* Definitions. */