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-rw-r--r--Carpet/CarpetEvolutionMask/interface.ccl5
1 files changed, 5 insertions, 0 deletions
diff --git a/Carpet/CarpetEvolutionMask/interface.ccl b/Carpet/CarpetEvolutionMask/interface.ccl
index ee09bf695..06f9ce09b 100644
--- a/Carpet/CarpetEvolutionMask/interface.ccl
+++ b/Carpet/CarpetEvolutionMask/interface.ccl
@@ -19,3 +19,8 @@ USES INCLUDE HEADER: carpet.hh
PUBLIC:
CCTK_REAL evolution_mask TYPE=gf TAGS='prolongation="none" InterpNumTimelevels=1' "mask function"
+
+# value key:
+# 0 - grid point is not in buffer region
+# 1 - grid point is in buffer region
+CCTK_INT buffer_mask TYPE=gf TAGS='prolongation="none" InterpNumTimelevels=1' "buffer mask function"