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This manual documents how to install and run the GNU font utilities. It corresponds to version 0.7 (released in March 2000).
The introduction briefly describes the purpose and philosophy of the font utilities. The overview gives details on their general usage, especially how they interact, and describes various things which are common to all or most of the programs.
The first part of this master menu lists the major nodes in this Info document, including the index. The rest of the menu lists all the lower level nodes in the document.
1. Introduction A brief introduction. 2. Installation How to compile and install the font utilities. 3. Overview Commonalities to the programs, a roadmap to how they fit together, and examples of using them in concert. 4. Bugs How, why, and where to report bugs. 5. File formats These programs read and write many files. 6. Imageto Extracting a font from a scanned image. 7. IMGrotate Rotating an image. 8. Fontconvert Manipulation of bitmap fonts. 9. Charspace Adding character metrics to a font. 10. Limn Making outlines from bitmaps. 11. BZRto Converting generic outlines to other formats. 12. BPLtoBZR Converting plain text to binary BZR fonts. 13. XBfe Hand editor for bitmap fonts under X11. 14. BZRedit Hand editor for outline fonts under Emacs. 15. GSrenderfont Rasterize PostScript fonts. 16. Enhancements Future projects. A. GNU GENERAL PUBLIC LICENSE Copying and sharing the font utilities. B. Regain your programming freedom Index General index.
-- The Detailed Node Listing ---
Options and frills for the `configure' script. 2.2 Prerequisites What's needed before installation. 2.3 Problems Known trouble.
2.2.1 Archives Where to find programs.
3.1 Picture A pictorial overview. 3.2 Creating fonts How to use the programs together. 3.3 Command-line options Many aspects of the command line are common to all programs. 3.4 Font searching How fonts and other files are looked for. 3.5 Font naming How to name fonts.
3.2.1 Font creation example A real-life example.
3.3.1 The main input file Each program operates on a "main" font. 3.3.2 Common options Some options are accepted by all programs. 3.3.3 Specifying character codes Ways of specifying single characters. 3.3.4 Common option values Some options need more information.
Specifying character codes
22.214.171.124 Named character codes Character names are looked up in the encoding. 126.96.36.199 Numeric character codes Decimal, octal, hex, or ASCII.
4.1 Bug criteria Have you found a bug? 4.2 Bug reporting How to effectively report a bug.
4.2.1 Necessary information What you need to send. 4.2.2 Unnecessary information What you don't need to send. 4.2.3 Documentation bugs Report the bugs in the manual, too.
5.1 File format abbreviations The alphabet soup of font formats. 5.2 Common file syntax Some elements of auxiliary files are constant. 5.3 Encoding files The character code-to-shape mapping. 5.4 Coding scheme map file The coding scheme string-to-filename mapping.
5.3.1 Character names How to write character names. 5.3.2 Ligature definitions How to define ligatures. 5.3.3 GNU encodings Why we invented new encodings for GNU.
6.1 Imageto usage Process for extracting fonts from an image. 6.2 IFI files IFI files supply extra information. 6.3 Invoking Imageto Command-line options.
6.1.1 Viewing an image Seeing what's in an image. 6.1.2 Image to font conversion Extracting a font. 6.1.3 Dirty images Handling scanning artifacts or other noise.
7.1 IMGrotate usage Doing the image rotation. 7.2 Invoking IMGrotate Command-line options.
7.1.1 Clockwise rotation Rotating clockwise. 7.1.2 Flip rotation FLipping end-for-end.
8.1 Invoking Fontconvert Command-line options.
8.1.1 Fontconvert output options Specifying the output format(s). 8.1.2 Character selection options What characters to operate on. 8.1.3 Character manipulation options Changing characters' appearance. 8.1.4 Fontwide information options Changing global information in a font. 8.1.5 Miscellaneous options Other options.
9.1 Charspace usage Details on improving the character metrics. 9.2 CMI files You specify the metrics in a separate file. 9.3 Invoking Charspace Command-line options.
9.2.1 CMI tokens The building blocks of CMI files. 9.2.2
Defining a character's side bearings. 9.2.3
Defining side bearings via the set width. 9.2.4
Introducing a new identifier. 9.2.5
Defining a kerning pair. 9.2.6
Specifying the font encoding. 9.2.7
Defining additional font parameters. 9.2.8 CMI processing How Charspace reads CMI files.
188.8.131.52 TFM fontdimens All the valid fontdimens.
10.1 Limn algorithm How Limn fits outlines to bitmaps. 10.2 Invoking Limn Command-line options.
10.1.1 Finding pixel outlines Extracting the edges from the bitmap. 10.1.2 Finding corners Finding subsections of each outline. 10.1.3 Removing knees Removing extraneous points. 10.1.4 Filtering curves Smoothing the outlines. 10.1.5 Fitting the bitmap curve Doing the fitting. 10.1.6 Changing splines to lines Use straight lines where possible. 10.1.7 Changing lines to splines Sometimes it isn't possible. 10.1.8 Aligning endpoints If points are close enough, line them out. 10.1.9 Displaying fitting online Seeing the results as Limn runs.
Fitting the bitmap curve
10.1.5.1 Initializing t Initializing the parameter values. 10.1.5.2 Finding tangents Computing the direction of the curve at the endpoints. 10.1.5.3 Finding the spline Where are the control points? 10.1.5.4 Reparameterization Changing the parameter values. 10.1.5.5 Subdivision Splitting the curve into pieces.
11.1 Metafont and BZRto Output as a Metafont program. 11.2 Type 1 PostScript fonts and BZRto Output as a Type 1 PostScript font. 11.3 Type 3 PostScript fonts and BZRto Output as a Type 3 PostScript font. 11.4 CCC files Creating additional characters. 11.5 Invoking BZRto Command-line options. 11.6 BZR files The technical definition of BZR format.
Metafont and BZRto
11.1.1 Metafont output at any size Making larger or smaller fonts. 11.1.2 Proofing with Metafont Metafont can help with debugging fonts.
Statements for including a character. 11.4.2 CCC
Statements for moving to a new position.
11.6.1 BZR format introduction General concepts and definitions. 11.6.2 BZR preamble The beginning. 11.6.3 BZR characters The middle. 11.6.4 BZR postamble The end.
184.108.40.206 BZR character beginnings Giving character metrics. 220.127.116.11 BZR character shapes Defining the outline(s).
12.1 BPL files Bezier property list file format. 12.2 Invoking BPLtoBZR Command-line options.
12.1.1 BPL preamble The beginning. 12.1.2 BPL characters The middle. 12.1.3 BPL postamble The end.
18.104.22.168 BPL outlines Representation of character outlines.
13.1 XBfe usage How to edit fonts. 13.2 Invoking XBfe Command-line options.
13.1.1 Controlling XBfe 13.1.2 XBfe shape editing Changing the pixels. 13.1.3 XBfe metrics editing Changing the side bearings.
XBfe shape editing
22.214.171.124 Selections Marking pixel regions for later operations. 126.96.36.199 Enlarging the bitmap Give yourself more room at the edges.
14.1 BZRedit usage Operating the editor.
14.1.1 BZRedit installation Additional installation is needed. 14.1.2 Editing BZR files Editing files in the binary format. 14.1.3 Editing BPL files Editing files in the textual format.
Editing BPL files
188.8.131.52 BZRedit and Ghostscript Customizing the use of Ghostscript.
15.1 GSrenderfont usage Making bitmap fonts from PostScript. 15.2 Invoking GSrenderfont Command-line options.
15.1.1 GSrenderfont font names Supplying PostScript names and filenames. 15.1.2 GSrenderfont output size Specifying the size and resolution. 15.1.3 GSrenderfont encoding Specifying the output encoding.
16.1 Additional fonts GNU needs more fonts. 16.2 Program features These programs can be improved. 16.3 Portability Assumptions about the programming environment. 16.4 Implementation Conventions we used in the sources.
16.1.1 Legal issues Legality (and illegality) differ by country.
Regain your programming freedom
B.1 Software patents Algorithm monopolies. B.2 User interface copyright Forbidding upward-compatibility. B.3 What to do?
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