document "old" reduction interface
Issue #1466
new
This is the reduction interface that provides eg CCTK_ReduceLocScalar and is the only one supported (I believe) by Carpet. It is currently only described in the users guide (http://einsteintoolkit.org/documentation/UsersGuide/UsersGuidech9.html#x13-117000C1.8) but not in the reference guide.
Keyword: documentation