diff --git a/src/layers.rs b/src/layers.rs
index 955c715cfc78bba7ce223b71340b2540e015e0b4..19bb2ce266f4a97f2f57f9a093eba13eabb8bbbd 100644
--- a/src/layers.rs
+++ b/src/layers.rs
@@ -54,6 +54,8 @@ pub struct Layer {
     pub tiles: LayerData,
     pub properties: Properties,
     pub layer_index: u32,
+    /// The ID of the layer, as shown in the editor.
+    /// Layer ID stays the same even if layers are reordered or modified in the editor.
     pub id: u32,
 }
 
diff --git a/src/objects.rs b/src/objects.rs
index 05219236d635c0610b01066e55f12bbfb984ef20..1329cc9fa3fbf90309e42c02d9c518867caa7811 100644
--- a/src/objects.rs
+++ b/src/objects.rs
@@ -20,6 +20,8 @@ pub struct ObjectGroup {
      */
     pub layer_index: Option<u32>,
     pub properties: Properties,
+    /// The ID of the layer, as shown in the editor.
+    /// Layer ID stays the same even if layers are reordered or modified in the editor.
     pub id: u32,
 }