(module tree
(tree-walk-preorder
 tree-walk-postorder
 tree-walk-breadth-first
 tree?
 tree=?
 tree-map
 tree-copy
 tree-count
 tree-size
 tree-any?
 tree-every?
 tree-find
 tree-find-equal?
 tree-atoms-any?
 tree-atoms-every?
 invert-tree
 tree-parent
 tree-depth
 tree-local-position
 tree-contains?
 tree-c-commands?
 tree-path
 tree-replace
 tree-add
 tree-insert
 tree-prune
 tree-move
 tree-display-atoms
 tree-remove)
(import scheme (chicken base) srfi-1 srfi-42 srfi-69 srfi-71)
(include "tree.scm"))