1 files changed, 3 insertions, 0 deletions
diff --git a/README.md b/README.md
index 511e4a7..839adc5 100644
--- a/README.md
+++ b/README.md
@@ -134,6 +134,9 @@ python3 scripts/render_delta_table.py \
   --out analysis/fixed_rrog_delta_matrix.png
 ```
 
+Negative raw deltas are rendered as `-`: the deployable system can fall back to
+the matching classic one-step GNN, so those cells mean no confirmed RRoG gain.
+
 Render the ZINC-only row:
 
 ```bash