package ifneeded menubar::node 0.5 [list source [file join $dir node.tcl]]
package ifneeded menubar::tree 0.5 [list source [file join $dir tree.tcl]]
package ifneeded menubar 0.5 [list source [file join $dir menubar.tcl]]
package ifneeded menubar::debug 0.5 [list source [file join $dir debug.tcl]]