Forest Window is a three-dimensional indication of the woods structure and a tree crown projection chart indication simulator. Data such as the XYZ coordinate of the tree position, height of a tree, height of the bottom of the branch, tree crown width and a diameter are read, and woods are expressed three-dimensionally by drawing a cone, a broadleaf tree in order in oval from the distance as for the conifer. Various functions were strengthened with Forest Window. FW is sharewere toward the enterprise though it is free software toward the education research organ and the administrative organ. Refer to a use condition for the details.