void layout_mark_to_selection(LayoutWindow *lw, gint mark, MarkToSelectionMode mode);
void layout_selection_to_mark(LayoutWindow *lw, gint mark, SelectionToMarkMode mode);
+void layout_mark_filter_toggle(LayoutWindow *lw, gint mark);
+
void layout_refresh(LayoutWindow *lw);
void layout_thumb_set(LayoutWindow *lw, gboolean enable);