Clarify documentation.

diff --git a/include/deal.II/base/mpi_compute_index_owner_internal.h b/include/deal.II/base/mpi_compute_index_owner_internal.h
index e95096ca924111e1000aa6be9bde149fbffe5be2..2d64269164d1d3d049dcaab9e68d0997ae40fe42 100644 (file)
--- a/include/deal.II/base/mpi_compute_index_owner_internal.h
+++ b/include/deal.II/base/mpi_compute_index_owner_internal.h
@@ -346,8 +346,14 @@ namespace Utilities
            * the consensus algorithm back to the owner in the original
            * IndexSet. This requires some point-to-point communication.
            *
-           * @return Map of processors and associated ranges of indices that
-           *         are requested from the current rank
+           * @return Map of processors and associated sets of indices
+           *         that are requested from the current rank. In
+           *         other words, this function returns for each rank
+           *         that has requested information about indices
+           *         owned by the current which indices it has
+           *         requested about; the values of the map are
+           *         therefore all subsets of the owned set of
+           *         indices.
            */
           std::map<unsigned int, IndexSet>
           get_requesters();