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-rw-r--r--param.ccl5
1 files changed, 3 insertions, 2 deletions
diff --git a/param.ccl b/param.ccl
index ee365dc..d04e7a2 100644
--- a/param.ccl
+++ b/param.ccl
@@ -490,8 +490,9 @@ boolean set_mask \
# r_inner = mask_radius_multiplier * r_horizon
# + mask_radius_offset * Delta_x
# r_outer = r_innter + mask_buffer_thickness * Delta_x
-# and where Delta_x is the Cactus grid spacing (more precisely,
-# the geometric mean of the x, y, and z Cactus grid spacings).
+# and where Delta_x is the Cactus base grid spacing (more precisely,
+# the geometric mean of the base grid's x, y, and z Cactus grid spacings)
+# (The "base grid" part here only matters if you're doing mesh refinement.)
#
real mask_radius_multiplier \
"radius multiplier to define the 'inside' mask region"