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Usage of GNU FreeFont Language scripts and faces ========================== There are three faces (serif, sans-serif, and monospace), and four styles (regular, bold, cursive/italic, and bold cursive/italic) for each face. There is one font file per face/style combination: 12 files in total. The letters for various languages, as well as specialized symbols, exist among the various font files, but they are not uniformly populated. All the fonts have complete support for Latin, Cyrillic, and Greek, as well as most of the extensions for those scripts. At this time, serif regular has by far the largest number of letters, and supports the largest number of writing scripts. However there are writing scripts supported by the sans-serif but not by serif. For an overview of which scripts and sets of symbols are supported by which face, see the FreeFont 'coverage' web page. Font features ============= FreeFont has numerous font "features" that perform alterations to the basic letters of the font, replacing them with other letters, or positioning them with respect to other letters. Many features are activated automatically, but in some environments, they present some user control. This documents those features with user control. Language-specific features ========================== Some OpenType font features are activated only when the text is specified to be of a certain language. This is done in HTML by enclosing the text with a tag whose 'lang' attribute is set to the appropriate ISO 632.2 language code. In a word processor, any block of text can be given a language setting. Latin ----- Catalan ligature improving l·l Dutch ligatures for ij, IJ Sami localized form for letter Eng Turkish overrides ligatures fi ffi of Latin Cyrillic -------- Ukrainian ligature for double i-diaresis Serbian/Macedonian localized letters be, and more in italic Bulgarian style set for modern glyphs Hebrew ------ Yiddish raised vowels under yo Devanagari ---------- Sanskrit much larger set of ligatures Hindi, Marathi better spacing of Western punctuation marks Indic languages --------------- The 'danda' character is encoded in Unicode only in the Devanagari range. When writing in scripts of other Indic languages, this same character is to be used. But the shapes and line thicknesses of glyphs vary slightly from one script to another, so the same glyph for 'danda' may not fit all scripts. By specifying the language of the text, an appropriate glyph for 'danda' will be obtained. Style sets ========== These replacements are activated by specifying a "Style Set". These features are accessible only from typesetting software. Cyrillic Bulgarian modern (ss01) Devanagari Bombay (ss02), Calcutta (ss03), Nepali (ss04) Discretionary features ====================== These features are accessible only from typesetting software. Typically the user must specifically request them. Unless otherwise noted, these are available only in FreeSerif. Ligatures and substitutions --------------------------- Arabic, Armenian, Hebrew, German, Dutch Small captials -------------- A limited set of specially drawn small capital letters in Latin. Superscript and subscript ------------------------- Transform a limited set of characters--mostly Latin letters and numerals-- to versions well-sized and positioned as superscript or subscript. Numeral styles -------------- The default numerals of FreeSerif are mono-spaced and of even height. It also features proportionally-spaced numerals, and "old-style" numerals-- those which vary in height and sometimes go beneath the baseline. These can be had at discretion. Diagonal fractions ------------------ A limited set of diagonal fraction substitutions are available at discretion. The set is more than what is encoded in Unicode. They work with the ASCII slash or the mathematical slash U+2215. The transform a sequence "number-slash-number" to a diagonal form. Zero ---- A slashed form of the numeral zero is available at discretion. Available in all faces. Alternative characters ====================== FreeSerif has some listings of alternatives for specific characters. Again this is use primarily in specialized typesetting software. Greek, Latin Use in LaTeX ============ It is possible to use Unicode fonts in recent LaTeX implementations, but in LuaTeX http://www.luatex.org/ and XeTeX http://tug.org/xetex/ it is particularly easy to use Unicode text, and to enable font features. Recent versions of these systems use the 'fontspec' package to choose fonts and features. A very simple document might contain the lines --------------------------------------------------------------------------- \documentclass{ltxdockit} \usepackage{fontspec} \usepackage{xunicode} \setmainfont[]{FreeSerif} \begin{document} {\fontspec[Script=Default,Fractions={On}]{FreeSerif} 1/7 3/10 7/10} x\raisebox{-0.5ex}{{\scriptsize ai}} x{\fontspec[Script=Default,VerticalPosition={Inferior}]{FreeSerif} abcdefghijklmnopqrstuvwxyz+−(0123456789)} \\ x\raisebox{0.85ex}{{\scriptsize ai}} x{\fontspec[Script=Default,VerticalPosition={Superior}]{FreeSerif} abcdefghijklmnopqrstuvwxyz+−(0123456789)} {\fontspec[Script=Latin]{FreeSerif} \textsc{Small Caps} } { Bсички хора се раждат свободни и равни по достойнство и права. \fontspec[Script=Cyrillic,Language=Bulgarian,Variant={1}]{FreeSerif} \selectfont Bсички хора се раждат свободни и равни по достойнство и права. } \end{document} --------------------------------------------------------------------------- Here are some 'fontspec' setting-value pairs meaningful for FreeFont. Numbers: Lining OldStyle Proportional SlashedZero Fractions: On VerticalPosition: Superior Inferior Ligatures: Common Historical Letters: UppercaseSmallCaps Variant: 1 (etc. -- must be in {} picks style set.) --------------------------------------------------------------------------- $Id: usage.txt,v 1.10 2011-07-16 08:38:06 Stevan_White Exp $