diff --git a/src/main.rs b/src/main.rs
index 96b8c1e..6f3341a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -38,6 +38,8 @@ struct Offer {
     sell_qty: FiNum,
     sell_remain: FiNum,
     buy_qty: FiNum,
+    royalty_acc: FiNum, // Buy type. In the royalty tree, for this node and those to the left
+    royalty_cap: FiNum, // In the royalty tree, just for this node.
     owner: i32,
     }