diff --git a/tests/NAMING-CONVENTION b/tests/NAMING-CONVENTION
index f08e2828..8fc6548d 100644
--- a/tests/NAMING-CONVENTION
+++ b/tests/NAMING-CONVENTION
@@ -61,3 +61,7 @@ machine isn't configured properly there should be a first subtest to just check
 for that.
 
 ctx: Tests that exercise the hw context support.
+
+render/blt/bsd/vebox: Tests which apply to individual rings should use these
+suffixes. They're a bit inconsistent and historically grown, but they new Bspec
+names (RCS, BCS, VCS and VECS) aren't really clearer.