1 files changed, 2 insertions, 1 deletions
diff --git a/README b/README
index 0528994..4ca6f88 100644
--- a/README
+++ b/README
@@ -7,4 +7,5 @@ Licence      : LGPL
 
 1. Purpose
 
-This thorn adds PETSc capability to a configuration.
+Configure an externally installed PETSc library; see
+<http://www.mcs.anl.gov/petsc/petsc-as/>.