+STR
+DOC ---
+MAP
=VAL :top1
+MAP &node1
=VAL &k1 :key1
=VAL :one
-MAP
=VAL :top2
+MAP &node2
=VAL :key2
=VAL :two
-MAP
=VAL :top3
+MAP
=VAL &k3 :key3
=VAL :three
-MAP
=VAL :top4
+MAP &node4
=VAL &k4 :key4
=VAL :four
-MAP
=VAL :top5
+MAP &node5
=VAL :key5
=VAL :five
-MAP
=VAL :top6
=VAL &val6 :six
=VAL :top7
=VAL &val7 :seven
-MAP
-DOC
-STR