More TODOs.

windows/tabpage.c

@@ -21,6 +21,7 @@ void tabPageMargins(HWND hwnd, intmax_t *left, intmax_t *top, intmax_t *right, i
 
 // dummy dialog procedure; see below for details
 // let's handle parent messages here to avoid needing to subclass
+// TODO do we need to handle DM_GETDEFID/DM_SETDEFID here too because of the ES_WANTRETURN stuff on oldnewthing (TODO)? what about multiple default buttons (TODO)?
 static INT_PTR CALLBACK dlgproc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 {
 	LRESULT lResult;