Document what PUO::*Quiet mean

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/src/updates.rs b/src/updates.rs
index f627de5622b31c209eea3168c476fbb1619cea01..52cf49440928d9112588426544879bd59c827ec3 100644 (file)
--- a/src/updates.rs
+++ b/src/updates.rs
@@ -152,6 +152,7 @@ pub struct DataLoadPlayer {
 // ---------- piece updates ----------
 
 #[derive(Debug,Clone,Copy,Serialize)]
+// Quiet means not to produce the yellow halo (see `movements` in script.ts)
 pub enum PieceUpdateOp<NS,ZL> {
   Delete(),
   Insert(NS),