Defines the batches to simulate, to collect results from or to [@c]query/[@c]eval/[@c]dump
results from. This option is only applicable to the simulation method
batch means. For this method, there are two kinds of batches:

* Default batches: No seed value is passed to the simulation program,
  the simulation program uses the default seed value. For default batches
  Final Result files are generated immediately.

* Seeded batches: A seed value is passed to the simulation program from which
  a start value for the random number generator is generated. Seeded batches are
  used for batch parallelization where only preliminary results (so called
  export results) are generated. A collect phase (see command collect) is required
  to generate the final results from the export results.

Default batches and seeded batches must not be mixed in one call to SimTree. They
may be mixed in a simulation tree for different simulation parameter value sets
(not recommended).

A batch specification consists of an (optional) seed part and an required
batch part. When a seed part is given, both parts are separated by a :.

The batch part and the seed part may be given as a single number ("5"), a list of
numbers ("[1,2,3]"), a range of numbers ("[1-5]") or a mixture of lists and
ranges ("[1-3,6,8]"). Ranges and lists are enclosed in "[" and "]".

For the simulate command, in the batch part only a single number (no list and no
range) is allowed for specifying the batch count (number of batches to
handle). For the [@c]query/[@c]eval/[@c]dump commands batches may be selected by 
lists/ranges of batch numbers.
