diff --git a/turtle-lib/src/commands.rs b/turtle-lib/src/commands.rs
index 4e60d10..37dd17a 100644
--- a/turtle-lib/src/commands.rs
+++ b/turtle-lib/src/commands.rs
@@ -34,8 +34,9 @@ pub enum TurtleCommand {
 
     // Position
     Goto(Coordinate),
-    /// Heading stored as internal radians (Y-down render-space convention),
-    /// already converted by the builder from user-facing degrees.
+    /// Heading stored as internal radians (Y-down render-space convention).
+    /// Values passed via `TurtlePlan::set_heading` are converted from
+    /// user-facing degrees before this command is enqueued.
     SetHeading(Radians),
 
     // Visibility