You can slice a single table full of calculations in different ways
into separate destinations. Or you can format the table differently.
There are many fun and exciting possible uses.
A fancier implementation would scan the document *once* for the
set of destinations. That could help implement another function
to update all destinations from all sources.
Refactor orgtbl-to-generic; explicitly separate heading from body.
Support last-line specializers.
Allow functions for some orgtbl parameters.
Add a :remove-nil-lines parameter to orgtbl-to-generic.
There was a problem that complex fields need a pair of parenthesis
around them. For example, if one field is "a a" and another field
is "a+b", multiplication of the two gave "a^3+b" instead of "a^3+a^2 b".
Now variable replacement puts extra parenthesis around values.