1 files changed, 10 insertions, 0 deletions
diff --git a/param.ccl b/param.ccl
index 6e03f12..0b9e7b9 100644
--- a/param.ccl
+++ b/param.ccl
@@ -1,6 +1,14 @@
 # Parameter definitions for thorn CartGrid3D
 # $Header$
 
+shares: driver
+
+USES BOOLEAN periodic
+USES BOOLEAN periodic_x
+USES BOOLEAN periodic_y
+USES BOOLEAN periodic_z
+
+
 private:
 
 BOOLEAN no_origin "DEPRECATED: Don't place grid points on the coordinate origin/axes"
@@ -159,3 +167,5 @@ BOOLEAN symmetry_zmax "Symmetry boundary condition on upper z boundary"
 {
  : :: "Logical"
 } "no"
+
+