1 files changed, 6 insertions, 0 deletions
diff --git a/src/tab.h b/src/tab.h
index 3166fb9..1036dbe 100644
--- a/src/tab.h
+++ b/src/tab.h
@@ -31,6 +31,12 @@ typedef struct MqTab MqTab;
 #include "tab-body.h"
 
 struct MqTab {
+	MqTab           *parent;
+	MqTab           *prev;
+	MqTab           *next;
+	MqTab           *first_child;
+	MqTab           *last_child;
+	guint            tree_size;
 	MqApplication   *application;
 	GtkWidget       *container;
 	MqTabChrome     *chrome;