add comment clarifying that we don't ourselves setup bit fields

for new style masks


git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinAnalysis/AHFinderDirect/trunk@1031 f88db872-0e4f-0410-b76b-b9085cfa78c5

1 files changed, 6 insertions, 0 deletions

diff --git a/param.ccl b/param.ccl
index 5d48c1a..70c1242 100644
--- a/param.ccl
+++ b/param.ccl
@@ -434,6 +434,12 @@ real mask_radius_offset[5] \
 # * the "new" style is that defined by CactusEinstein/SpaceMask:
 #   the mask is a CCTK_INT grid function, with a specified bit field
 #   set to specified values inside/outside the (adjusted) horizon
+#	[N.b. AHFinderDirect doesn't set up the bit fields --
+#	you must arrange for some other thorn to do this.  At
+#	present AHFinderDirect converts the names specified here
+#	to integer bit masks only once, in its setup routine;
+#	this may change to do this conversion each time AHFinderDirect
+#	does horizon finding.]
 # You can choose to set either (or even both!) of these.
 #
 boolean set_old_style_mask \