listbox is being used by ::dumper::listbox.
listbox is being used by ::vgcode::dump-configure-Listbox, ::vgcode::dump-configure-Gistbox clients.
Example 3.8. ::vgcode::dump-configure-Listbox using listbox
... set items \ [$target get 0 end] if {{} == $items} { return {} } return \ [dumper::listbox $ta_name $items]