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diff --git a/FPPrac.hs b/FPPrac.hs
index 7e5a6914225519e0d3056b50344467794f405091..9f5ec9d68eb5f5d4c7d523ed9745b51b7bbae8db 100644 (file)
--- a/FPPrac.hs
+++ b/FPPrac.hs
@@ -177,7 +177,8 @@ runGUI w h (IS { .. }) = do
        Gtk.mainGUI
        
 
--- | Copy the given surface to the exposed window on an expose event.
+-- | Called when (part of) the window should be redrawn. Copy the given surface
+--   to the exposed window on an expose event.
 onExpose :: IORef Cairo.Surface -> EventM.EventM EventM.EExpose Bool
 onExpose buffer = do
        current_buffer <- liftIO $ readIORef buffer