./btree_example walk 1 1                                 :master*: !!??
Root node is at 58552
Node at 58040, 3 keys
 Key                    a: @57944    4 bytes: ciao
 Key                   ba: @57976    4 bytes: nana
 Key                  foo: @57672    3 bytes: bar
Node at 58552, 1 keys
 Key                    z: @57960    5 bytes: zorro
Node at 58296, 3 keys
 Key                   za: @57992    1 bytes: 1
 Key                   ze: @58008    1 bytes: 2
 Key                   zi: @58024    1 bytes: 3