Pleasure instead of frustration with fonts
Fonts are software—and should be updated from time to time.
Fonts are software - and should be updated from time to time. "We always work with the latest versions," the technical managers proudly state when asked about the software used. And the fonts? They either "slipped into the company" with orders or come from the font library that a former employee procured years ago. What about keeping them up to date? Fonts are software too - and need to be updated from time to time! Type 1 - the original animal
The first qualitatively usable PC fonts were the PostScript Type 1 fonts - commonly known as PostScript fonts. Adobe developed this font format at the beginning of the 1980s. These PostScript fonts always consist of an outline and font metrics file for output as well as for display on the screen. With this generation of fonts, WYSIWYG (what you see is what you get) was introduced to computers. Unfortunately, the operating systems were not inherently capable of handling this font format. This required the Type Manager (ATM) developed by Adobe.
Today, the operating systems Mac OS X and Windows (since Windows 2000) handle these fonts without any problems - even without ATM. However, with almost twenty years under its belt, this font format no longer meets today's requirements.
TrueType - the challenger
Adobe did not disclose the specifications of Type 1 for a long time. This is probably why the competition (Apple and Microsoft) launched their own font format, TrueType, on the market - with full support in their own operating systems, of course. In contrast to Type 1, a TrueType font only requires one file. The number of glyphs (appearance; see box "Glyphs") is also not limited to 1 byte (= 28 = 256 possibilities/glyphs) - TrueType fonts can contain up to 6000 glyphs.
Unfortunately, this format had the disadvantage that the first PostScript-based output computers (Rips) did not directly support TrueType. It was only with PostScript version Level 2 that Adobe introduced the TrueType rasterizer and thus solved the output problem. TrueType has had a bad reputation ever since, and wrongly so.
OpenType - the best of both worlds
Complicated handling, limited number of glyphs, poor output support: Adobe and Microsoft recognized these shortcomings and introduced the OpenType font format in 1996. The development goal was to create a font format that combines all the advantages of previous font formats and is also platform-neutral. From a technical point of view, OpenType fonts can carry a TrueType or Type 1 outline internally.
However, the spread of OpenType still leaves a lot to be desired. Yet OpenType offers many advantages:
- up to 65536 glyphs per font
- Platform neutrality (run under Mac and Windows operating systems without conversion)
- One font per file is sufficient
- ATM no longer necessary
- Unicode as a basis (see under "Unicode - and everyone understands each other")
- many typographic functions (ligatures, breaks etc.)
Adobe itself has converted its entire font library into OpenType. Linotype, which belongs to the printing press manufacturer Heidelberg, also offers a large collection of OpenType fonts. Other font companies are also gradually offering OpenType versions of their fonts.
OpenType in practical use
Adobe InDesign was the first application with full OpenType support. This means that not only can an OpenType font be used for typesetting, but OpenType font functions can also be accessed. A popular function here are the "real" fractions. Fraction digits are simply given a different ID and they are set typographically correct. Even "real" small caps are no problem in this way. Figures for tables and running text are impressive and/or have long been missed by former lead typesetters. Thanks to OpenType, numerals with ascenders and descenders (oldstyle numerals) are available again on request.
To select and access the characters, Adobe has built a glyph palette into InDesign and Illustrator. Double-clicking on the desired glyph inserts it at the text cursor position. The situation with the QuarkXpress layout program is still bleak. Although Xpress "sees" the first 256 glyphs of an OpenType font thanks to the operating system, the software is blind to the functions as such. Nevertheless, the use of OpenType is also recommended under Xpress.
Unicode - and everyone understands each other
In the case of Type 1 fonts, for example, the so-called ASCII code was responsible for encoding the characters. However, this encoding has the disadvantage that it is platform-dependent. This has changed with the Unicode encoding, which assigns a unique code to every character in every written language. Apple and Microsoft support Unicode - and since OpenType is based on Unicode, this font format is also platform-independent. Anyone who also wants to keep their data ready for future applications (multiple data use) should definitely look into Unicode now.
Manage fonts
If you only manage a few fonts under Mac OS X and Windows XP today, the font directories of the operating systems are sufficient. These support fonts in Type 1, TrueType and OpenType format. If you reach the limits of this software, you should use professional font management programs.
Software provider Extensis offers two tools, Suitcase and Fontreserve: Suitcase should, however, be used with caution according to current knowledge - especially if the auto-activation plug-in is activated, as this is responsible for various system problems. Extensis Fontreserve is recommended for large environments. The font management program Fontagent Pro from Insider Software is very popular and reliable under Mac OS X.
The glyph palette in InDesign and Illustrator helps when dealing with many glyphs.
Adobe InDesign gets everything from the OpenType fonts, even "real" fractions are no problem. The functions that are not in square brackets are accessible for each font.
Adobe delivers over 100 OpenType styles with the Creative Suite. This makes it easier to get started in the new font world.
Glyphs p charactersGlyphs and characters are not the same thing. With OpenType you have to be aware of this. For example, the characters f + i can be set as capitals, as ligatures or as lowercase letters. The characters are then the same, but the glyphs (the appearance) are not. The glyph is therefore the current appearance of a character.
Each glyph form has a unique identification, the glyph ID - not to be confused with the Unicode value of the character. An OpenType function is now based on changing the glyph ID. In InDesign, the functions are accessible in the palette menu of the control element. Depending on the font, there are more or less implemented OpenType functions; functions that are not accessible are marked with square brackets in Adobe applications.
"Special fonts"
CID fonts: CID fonts became known with Adobe InDesign. This font format is used for direct PDF export from Illustrator and InDesign. However, older rips (raster image processors) do not support this format, which requires updates.
.dfont: Unfortunately, this Apple font format is used as the system font under Mac OS X. The output works well with the "data fork fonts", but documents cannot be output directly when switching platforms. (hu)
Haeme Ulrich
The first qualitatively usable PC fonts were the PostScript Type 1 fonts - commonly known as PostScript fonts. Adobe developed this font format at the beginning of the 1980s. These PostScript fonts always consist of an outline and font metrics file for output as well as for display on the screen. With this generation of fonts, WYSIWYG (what you see is what you get) was introduced to computers. Unfortunately, the operating systems were not inherently capable of handling this font format. This required the Type Manager (ATM) developed by Adobe.
Today, the operating systems Mac OS X and Windows (since Windows 2000) handle these fonts without any problems - even without ATM. However, with almost twenty years under its belt, this font format no longer meets today's requirements.
TrueType - the challenger
Adobe did not disclose the specifications of Type 1 for a long time. This is probably why the competition (Apple and Microsoft) launched their own font format, TrueType, on the market - with full support in their own operating systems, of course. In contrast to Type 1, a TrueType font only requires one file. The number of glyphs (appearance; see box "Glyphs") is also not limited to 1 byte (= 28 = 256 possibilities/glyphs) - TrueType fonts can contain up to 6000 glyphs.
Unfortunately, this format had the disadvantage that the first PostScript-based output computers (Rips) did not directly support TrueType. It was only with PostScript version Level 2 that Adobe introduced the TrueType rasterizer and thus solved the output problem. TrueType has had a bad reputation ever since, and wrongly so.
OpenType - the best of both worlds
Complicated handling, limited number of glyphs, poor output support: Adobe and Microsoft recognized these shortcomings and introduced the OpenType font format in 1996. The development goal was to create a font format that combines all the advantages of previous font formats and is also platform-neutral. From a technical point of view, OpenType fonts can carry a TrueType or Type 1 outline internally.
However, the spread of OpenType still leaves a lot to be desired. Yet OpenType offers many advantages:
- up to 65536 glyphs per font
- Platform neutrality (run under Mac and Windows operating systems without conversion)
- One font per file is sufficient
- ATM no longer necessary
- Unicode as a basis (see under "Unicode - and everyone understands each other")
- many typographic functions (ligatures, breaks etc.)
Adobe itself has converted its entire font library into OpenType. Linotype, which belongs to the printing press manufacturer Heidelberg, also offers a large collection of OpenType fonts. Other font companies are also gradually offering OpenType versions of their fonts.
OpenType in practical use
Adobe InDesign was the first application with full OpenType support. This means that not only can an OpenType font be used for typesetting, but OpenType font functions can also be accessed. A popular function here are the "real" fractions. Fraction digits are simply given a different ID and they are set typographically correct. Even "real" small caps are no problem in this way. Figures for tables and running text are impressive and/or have long been missed by former lead typesetters. Thanks to OpenType, numerals with ascenders and descenders (oldstyle numerals) are available again on request.
To select and access the characters, Adobe has built a glyph palette into InDesign and Illustrator. Double-clicking on the desired glyph inserts it at the text cursor position. The situation with the QuarkXpress layout program is still bleak. Although Xpress "sees" the first 256 glyphs of an OpenType font thanks to the operating system, the software is blind to the functions as such. Nevertheless, the use of OpenType is also recommended under Xpress.
Unicode - and everyone understands each other
In the case of Type 1 fonts, for example, the so-called ASCII code was responsible for encoding the characters. However, this encoding has the disadvantage that it is platform-dependent. This has changed with the Unicode encoding, which assigns a unique code to every character in every written language. Apple and Microsoft support Unicode - and since OpenType is based on Unicode, this font format is also platform-independent. Anyone who also wants to keep their data ready for future applications (multiple data use) should definitely look into Unicode now.
Manage fonts
If you only manage a few fonts under Mac OS X and Windows XP today, the font directories of the operating systems are sufficient. These support fonts in Type 1, TrueType and OpenType format. If you reach the limits of this software, you should use professional font management programs.
Software provider Extensis offers two tools, Suitcase and Fontreserve: Suitcase should, however, be used with caution according to current knowledge - especially if the auto-activation plug-in is activated, as this is responsible for various system problems. Extensis Fontreserve is recommended for large environments. The font management program Fontagent Pro from Insider Software is very popular and reliable under Mac OS X.
The glyph palette in InDesign and Illustrator helps when dealing with many glyphs.
Adobe InDesign gets everything from the OpenType fonts, even "real" fractions are no problem. The functions that are not in square brackets are accessible for each font.
Adobe delivers over 100 OpenType styles with the Creative Suite. This makes it easier to get started in the new font world.
Glyphs p charactersGlyphs and characters are not the same thing. With OpenType you have to be aware of this. For example, the characters f + i can be set as capitals, as ligatures or as lowercase letters. The characters are then the same, but the glyphs (the appearance) are not. The glyph is therefore the current appearance of a character.
Each glyph form has a unique identification, the glyph ID - not to be confused with the Unicode value of the character. An OpenType function is now based on changing the glyph ID. In InDesign, the functions are accessible in the palette menu of the control element. Depending on the font, there are more or less implemented OpenType functions; functions that are not accessible are marked with square brackets in Adobe applications.
"Special fonts"
CID fonts: CID fonts became known with Adobe InDesign. This font format is used for direct PDF export from Illustrator and InDesign. However, older rips (raster image processors) do not support this format, which requires updates.
.dfont: Unfortunately, this Apple font format is used as the system font under Mac OS X. The output works well with the "data fork fonts", but documents cannot be output directly when switching platforms. (hu)
Haeme Ulrich
