The link http://forth.works/book.html http://forth.works/book.html is broken. Maybe the correct link is: http://forthworks.com/retro/book.html http://forthwork

The link http://forth.works/book.html http://forth.works/book.html is broken. Maybe the correct link is: http://forthworks.com/retro/book.html http://forthworks.com/retro/book.html