Book Antiqua One of the best-known Palatino PostScript clones is "Book Antiqua" (originally by Monotype), distributed with much Microsoft software, beginning with Microsoft Windows. It is one of many clone PostScript typefaces distributed by Microsoft and Monotype around this time, including Arial (a clone of Helvetica), Century Gothic (ITC Avant Garde) and Bookman Old Style (ITC Bookman). Book Antiqua resembles Palatino extremely closely and is almost indistinguishable from the original apart from a few detail differences. ("Antiqua" is another word for the "Roman" style of typefaces that Palatino is based on, as opposed to blackletter. The genre, inspired by Italian traditions of handwriting and calligraphy, has been a dominant influence on most typefaces and lettering created in the Western world since the Renaissance.) In 1993, Zapf resigned from l'Association Typographique Internationale (ATypI) over what he viewed as its hypocritical attitude toward unauthorized copying by prominent ATypI members (namely Monotype). In the United States, the abstract design of a typeface is not protected by copyright, and can be imitated freely (unless the typeface is protected by a design patent, which is of much more limited duration and rarely applied for). Copyright protection is available for the representation of a typeface in software (a computer font), and the names of typefaces can be protected by trademark. Microsoft has since licensed and distributes Linotype's version of Zapf's original design called Palatino Linotype in all versions of Windows since Windows 2000. During the Palatino Linotype development process, Zapf and Linotype requested that Microsoft cease to include Book Antiqua with Office, but Microsoft concluded that this was impossible as too many documents had already been created using it. A custom version of Book Antiqua was created by Monotype as a corporate font for the Parliament of the UK. Free and open-source versions and derivatives The first legal free version of Palatino was URW Palladio L. The open-source community greatly extended the character sets of the fonts and releases new, updated versions under new names. FPL Neu is a typeface based on URW Palladio L font. It has both text figures and lining figures. It is available both in Type 1 format and OpenType format. TeX Gyre Pagella is another similar typeface based on the URW Palladio L font. Pagella includes accents for European languages as well as glyphs for a few non-European languages. This typeface is released in formats compatible with LaTeX as well as