An Electronic Doc license is based on the number of publications in which the font is used. Each issue counts as a separate publication. Regional or format variations don't count as separate publications.
Type 1 fonts are a specialized form of PostScript program and are the original file format used for type display on all PostScript printers. The PostScript language was later extended to support the later TrueType and OpenType font standards. Any new Adobe PostScript language device made today supports all three font standards.
Adobe PostScript Type 1 is a worldwide standard for digital type fonts (International Standards Organization outline font standard, ISO 9541). Adobe Systems was a pioneer for Type 1 for use in PostScript printers. Adobe has set the standards for the design and manufacturing of the Type 1 software. Hundreds of companies around the world followed suit, designing and releasing more than 30,000 fonts in the Type 1 format.
The Type 1 font format is recognized on every computer platform, from microcomputers to mainframes. It prints on every printer, either directly through built-in PostScript language interpreting, or through add-on utilities, such as Adobe Type Manager (ATM). ATM technology is integrated into Microsoft Windows 2000 and Mac OS X operating system. For more than a decade, Type 1 has been the preferred format for the graphic arts and publishing industries.
TrueType is a standard for digital type fonts that was developed by Apple Computer, and later licensed to Microsoft Corporation. Each company has made independent extensions to TrueType, which is used in both Windows and Macintosh operating systems. Like Type 1, the TrueType format is available for development of new fonts.
OpenType is a new standard for digital type fonts, developed jointly by Adobe and Microsoft. OpenType supersedes Microsoft's TrueType Open extensions to the TrueType format. OpenType fonts can contain either PostScript or TrueType outlines in a common wrapper. An OpenType font is a single file, which can be used on Macintosh and Windows platforms without conversion. OpenType fonts have many advantages over previous font formats because they contain more glyphs, support more languages (OpenType uses the Unicode standard for character encoding). OpenType fonts also support rich typographic features such as small caps, old style figures, and ligatures, all in a single font.
Beginning with Adobe InDesign and Adobe Photoshop 6.0, applications have begun to support OpenType layout features. OpenType layout allows you to access features such as old style figures or true small caps by simply applying formatting to text. In most applications that do not support such features, OpenType fonts work just like other fonts. Although, the OpenType layout features are not accessible.
OpenType with PostScript outlines is supported by the latest versions of Adobe Type Manager, and is natively supported in Windows 2000. Apple has also announced its intent to support OpenType, and supplies Japanese system fonts for Mac OS X in OpenType form with PostScript outlines.
Character encoding is a table in a font or a computer operating system that maps character codes to glyphs in a font. Most operating systems today represent character codes with an 8-bit unit of data known as a byte. Thus, character encoding tables today are restricted to at most 256 character codes. Not all operating system manufacturers use the same character encoding. For example, the Macintosh platform uses the standard Macintosh character set as defined by Apple Computer, Inc., while the Windows operating system uses another encoding entirely, as defined by Microsoft. Fortunately, OpenType fonts (and standard Type 1 fonts) contain all the glyphs needed for both these encodings, so they work correctly not only with these two systems, but others as well.
Not all operating system manufacturers use the same character encoding. For example, the Macintosh platform uses the standard Macintosh character set as defined by Apple Computer, Inc., while the Windows operating system uses another encoding entirely, as defined by Microsoft. Fortunately, standard Type 1 fonts contain all the glyphs needed for both these encodings, so they work correctly not only with these two systems, but others as well.
Also see character, glyph, keyboard layout.
The OpenType format is a superset of the existing TrueType and Adobe PostScript Type 1 font formats. It enables improved cross-platform document portability, rich linguistic support, powerful typographic capabilities, and simplified font management requirements.
OpenType is technically an extension of Microsoft's TrueType Open format, which can contain either PostScript font outlines (.otf) or TrueType font outlines (.ttf). OpenType.otf fonts are recognized and rendered onscreen by a PostScript rasterizer, like Adobe Type Manager (ATM), which is either installed as an add-on system software component or built directly into the operating system. Macintosh Mac OS X, Microsoft Windows 2000, Windows XP, and all later Windows operating systems that have built in support for OpenType and Type 1 fonts. OpenType fonts peacefully co-exist with current font formats and used in the same document alongside Type 1 and TrueType fonts.
You can continue working as you always have. OpenType works seamlessly alongside both TrueType and Type 1 fonts. OpenType fonts simply provide more power, since they offer extended language support and advanced typographic features on platforms and applications that support extended OpenType capabilities.
The decision to work together came from a desire to provide the best solution for customers, and to provide an environment for future joint innovations. Both companies agree that merging the Type 1 and TrueType formats is the best solution for customers. The two font standards can now be supported seamlessly on both Windows and Macintosh platforms.
First released in 1992, the multiple master font format was an incredible advance in type technology. In 2000, Adobe unveiled the next great leap forward: Opentype. Developed in conjunction with Microsoft, OpenType uses the same cross-platform font file on both the Macintosh and Windows platforms, providing more reliable document portability. This one font file can also contain an expanded glyph set that allows for extended language support and integrated access to advanced typographic features.
Note that turning on fraction formatting in category 3 fonts can also affect numbers and punctuation that aren't fractions, so one needs to be careful to apply fraction formatting to only the fractions themselves. Even when using fonts where this is not a problem, one might later change fonts, or use a newer version of a font; therefore Adobe strongly recommends that users adhere to this practice even when using fonts for which globally applying fractions formatting does not cause immediate problems.
If you are using the latest version of ATM Light, or an operating system, such as Windows Vista, Windows XP, Windows 2000, or Mac OS X (with native applications) which has native OpenType support, OpenType CFF fonts should work with virtually all your existing applications. However, some applications which perform some or all of the font-handling normally done by the operating system may need to be updated in order to recognize and render OpenType CFF fonts.
Some OpenType Pro fonts may not type into a Word document correctly. This is occurring most noticeably with Pro fonts that have CE glyphs and sort at the bottom of Word's type menu. When you place the text cursor into the middle of a word or at the end of a line that is already formatted as an OpenType Pro font, the formatting of the word changes to the default MS Word font. When you place the cursor at the end of a line of text and begin typing, all subsequent text will be formatted in the default MS Word font.
Style-linking is used with fonts of all formats in standard Windows applications. Most Windows applications only show the "base font" of any style-linked group in their font menus. The additional style-linked fonts won't show up separately in the font menu of these applications.
Background:
Most of the information in the style linking section applies for the user on the Mac OS as well, it's just Mac users also have the option of directly selecting the fonts. However, for certain applications, if someone is creating Mac documents that will also be used on Windows, they must use the style links when available, or the Windows version of the application will not be able to correctly identify the font used.
Kerning in cocoa applications:
In Mac OS X up to (at least) 10.2.4, the native support in Mac OS X does not include support for kerning information in OpenType CFF and Type 1 fonts. This means that OS X cocoa applications which rely on the OS to provide kerning information (rather than directly reading the OpenType font) see the font as having no kerning pairs.
Mac OS X, issues fixed in 10.2.3, 10.4.9:
Style-linking in carbon/native applications:
The native OpenType OTF support in Mac OS X did not initially include support for style links between OTF fonts. This means that OS X native or carbon applications which relied on the OS to provide style linking information will treat the fonts as having no style links. Therefore bold and italic style buttons will either not work or will create synthesized styles (smeared or slanted) instead of accessing the correct font. This can have side effects: opening or importing a document authored on an earlier OS with OpenType OTF fonts using style links may result in the correct font not being found. Workaround: For applications using Adobe's common font engine, such as InDesign, Photoshop, and Illustrator, one can work around this problem by putting the fonts in the application's fonts folder or in the application support:Adobe:Fonts folder. This issue was fixed in Mac OS X 10.2.3 to 10.3.9, reappeared in 10.4.0 and is again fixed in 10.4.9. Mac OS X 10.2.2 supports style links, but they may yield incorrect/unexpected results.