Update documentation in a couple of places.

diff --git a/include/deal.II/lac/petsc_matrix_base.h b/include/deal.II/lac/petsc_matrix_base.h
index 076c38e51e3e2173a891d2b58bc6e4231ab4cedf..0441b9eb649809d26543d7603e72fc5734a65931 100644 (file)
--- a/include/deal.II/lac/petsc_matrix_base.h
+++ b/include/deal.II/lac/petsc_matrix_base.h
@@ -851,17 +851,19 @@ namespace PETScWrappers
     is_hermitian (const double tolerance = 1.e-12);
 
     /**
-     * Prints the PETSc matrix object values using PETSc internal matrix
+     * Print the PETSc matrix object values using PETSc internal matrix
      * viewer function <tt>MatView</tt>. The default format prints the non-
      * zero matrix elements. For other valid view formats, consult
-     * http://www.mcs.anl.gov/petsc/petsc-
-     * current/docs/manualpages/Mat/MatView.html
+     * http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatView.html
      */
     void write_ascii (const PetscViewerFormat format = PETSC_VIEWER_DEFAULT);
 
     /**
-     * print command, similar to write_ascii, but the same format as produced
-     * by Trilinos
+     * Print the elements of a matrix to the given output stream.
+     *
+     * @param[in,out] out The output stream to which to write.
+     * @param[in] alternative_output This argument is ignored. It exists
+     *   for compatibility with similar functions in other matrix classes.
      */
     void print (std::ostream &out,
                 const bool    alternative_output = false) const;