diff --git a/imgui_internal.h b/imgui_internal.h
index ebb3db8c..0dd6f630 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -512,8 +512,8 @@ struct IMGUI_API ImGuiDrawContext
     int                     TreeDepth;
     ImGuiID                 LastItemID;
     ImRect                  LastItemRect;
-    bool                    LastItemHoveredAndUsable;
-    bool                    LastItemHoveredRect;
+    bool                    LastItemHoveredAndUsable;  // Item rectangle is hovered, and its window is currently interactable with (not blocked by a popup preventing access to the window)
+    bool                    LastItemHoveredRect;       // Item rectangle is hovered, but its window may or not be currently interactable with (might be blocked by a popup preventing access to the window)
     bool                    MenuBarAppending;
     float                   MenuBarOffsetX;
     ImVector<ImGuiWindow*>  ChildWindows;