Learning GNU Emacs, 3rd Edition by Debra Cameron, James Elliott, Marc Loy The unconfirmed error reports are from readers. They have not yet been approved or disproved by the author or editor and represent solely the opinion of the reader. Here's a key to the markup: [page-number]: serious technical mistake {page-number}: minor technical mistake : important language/formatting problem (page-number): language change or minor formatting problem ?page-number?: reader question or request for clarification This page was updated March 26, 2007. UNCONFIRMED errors and comments from readers: {xiii} 1st paragraph; The intro makes the statement "Many important open source projects that origianlly used variants of the GPL or other licensing schemes have adopted the GPL as their license, including Python, Mozilla, and Zope." Although they are GPL-compatible, both Python and Zope use BSD-style licenses; there is no requirement to redistribute modified source. Not even to page 1, and there's already some FSF lies! ;-)