.

wcfs/internal/xbtree.py

@@ -27,9 +27,10 @@ It is primarily used to verify ΔBTail in wcfs.
 - `Bucket` represents a bucket node.
 - `StructureOf` returns internal structure of ZODB BTree represented as Tree
   and Bucket nodes.
-- `Restructure` XXX
+- `Restructure` reorganizes ZODB BTree instance according to specified topology
+  structure.
 
-- `AllStructs` XXX
+- `AllStructs` generates all possible BTree topology structures with given keys.
 
 
 Topology encoding
@@ -73,6 +74,16 @@ represented as
 
 A layer consists of nodes that are followed by node-node links from upper layer
 in left-to-right order.
+
+
+Visualization
+-------------
+
+The following visualization utilities are provided to help understanding BTrees
+better:
+
+- `topoview` displays BTree structure given its topology-encoded representation.
+- `Tree.graphviz` returns Tree graph representation in dot language.
 """
 
 from __future__ import print_function, absolute_import