1 files changed, 10 insertions, 2 deletions
diff --git a/param.ccl b/param.ccl
index 573f46c..3ccff24 100755
--- a/param.ccl
+++ b/param.ccl
@@ -19,6 +19,14 @@ STRING prolongation_type "The prolongation operator used by Carpet for HydroBase
   ".*"   :: "Anything else"
 } "ENO"
 
-BOOLEAN use_Y_e "Enable storage for Y_e"
+KEYWORD initial_Y_e "Initial value for Y_e"
 {
-} "no"
+  "none" :: "inactive"
+  "one"  :: "initially set to one"
+} "none"
+
+KEYWORD Y_e_evolution_method "Evolution method for Y_e"
+{
+  "none" :: "Evolution for Y_e is disabled"
+} "none"
+