Full complement of characters: all alphanumerics and symbols shown on a standard keyboard, as well as European characters. All my text fonts (and most display fonts) also include ligatures, extensive dicritics and alternates in option/alt positions. All preussTYPE-CFF-OpenType-Fonts include Icelandic characters; and foreign currency symbols. The euro is included in all fonts released starting in 1998.
• Accurate letterfitting based on a traditional and time-tested scheme.
• Kerning using a proprietary, highly-exacting visual technique.
• Complete point, path, and font file testing.
• Custom hinting on all new text types.
• Unique Adobe-issued PostScript ID numbers to eliminate printer file
conflicts.
• XUID, a new Adobe-issued PostScript ID number
PostScript Type 1
The PostScript Type 1 format is platform-specific for Windows or Mac OS.
To use PostScript Type 1 fonts, Adobe Type Manager (ATM) and the Adobe PostScript Printer Driver must be installed for Mac OS versions other than OS X, and Windows versions other than 2000 or XP.
PostScript font support is built directly into Mac OS X, Windows 2000, and Windows XP. Mac OS X only needs ATM Light to provide support for 'Classic' applications. ATM Light is required for multiple master font support on Windows 2000 and XP.
ATM Light is available as a free download from the 
Adobe
web site.
TrueType
The TrueType format is platform-specific for Windows or Mac OS.
TrueType fonts are supported natively in all versions of Windows. To use, move them to the Fonts folder in the Control Panel. TrueType fonts may also be managed by Adobe Type Manager and other utilities if you have them installed.
OpenType
OpenType is a cross-platform font format developed jointly by Adobe and Microsoft. It offers a greatly expanded character set, and advanced typographic features accessible in newer versions of word processing, layout, and design applications.
All preussTYPE-Fonts are produced in CFF-OpenType format.
A detailed listing of OpenType
compatibility issues affecting both Adobe applications and other third-party
software is available on the Adobe
web site.
Adobe Type Manager (ATM) version 4.6 or later and the Adobe PostScript Printer Driver must be installed for Mac OS versions other than OS X, and Windows versions other than 2000 or XP.
ATM Light 4.6 is a free download for Mac
OS or Windows.
ATM Deluxe version 4.6.1 is a free upgrade from 4.5 for Mac
OS.
Mac OS X, Windows 2000, and Windows XP (Home and Professional) provide native support for OpenType fonts and do not require ATM Light or the AdobePS printer driver.
Most Macintosh and Windows applications are compatible with OpenType through the use of ATM Light or native operating system support (see below for details), only Adobe InDesign provides advanced OpenType feature support. Other Adobe applications are expected to support these additional OpenType-specific features in the future.
The following Adobe applications are compatible with OpenType fonts:
For more information on OpenType in general, see Adobes Introduction
to OpenType.