*slime-repl clojure*

user> (use 'vijual)
nil
user> (draw-tree [[:north-america [:usa [:miami] [:seattle] [:idaho [:boise]]]] [:europe [:germany] [:france [:paris] [:lyon] [:cannes]]]]) 
        +------------+        +--------+
        |    north   |        | europe |
        |   america  |        +----+---+
        +------+-----+             |
               |         +---------+---------+
               +         |                   |
               |    +----+----+          +---+----+
            +--+--+ | germany |          | france |
            | usa | +---------+          +---+----+
            +--+--+                          |
               |                    +--------+---------+
    +----------+----------+         |        |         |
    |          |          |     +---+---+ +--+---+ +---+----+
+---+---+ +----+----+ +---+---+ | paris | | lyon | | cannes |
| miami | | seattle | | idaho | +-------+ +------+ +--------+
+-------+ +---------+ +---+---+
                          |
                          +
                          |
                      +---+---+
                      | boise |
                      +-------+
nil
user>