diff --git a/interface/wx/dialog.h b/interface/wx/dialog.h
index 07f15907c4..e53af26867 100644
--- a/interface/wx/dialog.h
+++ b/interface/wx/dialog.h
@@ -583,6 +583,10 @@ public:
         modeless dialog modal. However ShowModal() can't be called twice
         without intervening EndModal() calls.
 
+        Note that this function creates a temporary event loop which takes
+        precedence over the application's main event loop (see wxEventLoopBase)
+        and which is destroyed when the dialog is dismissed.
+
         @return The value set with SetReturnCode().
 
         @see EndModal(), GetReturnCode(), SetReturnCode()
diff --git a/interface/wx/evtloop.h b/interface/wx/evtloop.h
index 41e4316355..885ce45862 100644
--- a/interface/wx/evtloop.h
+++ b/interface/wx/evtloop.h
@@ -18,6 +18,7 @@
 
     An object of this class is created by wxAppTraits::CreateEventLoop() and
     used by wxApp to run the main application event loop.
+    Temporary event loops are usually created by wxDialog::ShowModal().
 
     You can create your own event loop if you need, provided that you restore
     the main event loop once yours is destroyed (see wxEventLoopActivator).