Links
[1] https://www.ifross.org/?q=en/tcltk-license-terms
[2] https://www.ifross.org/?q=en/user/login&destination=comment/reply/488%23comment-form
[3] https://www.ifross.org/?q=en/category/lizenzordnung/open-source-lizenzen/i-lizenzen-ohne-copyleft-effekt/b-sonstige-lizenzen-ohne
[4] https://www.ifross.org/?q=en/category/tags/tcl/tk-license-terms