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5 GNU troff Reference

This chapter covers all of the facilities of the GNU troff formatting engine. Users of macro packages may skip it if not interested in details.

• Text
• Page Geometry
• Measurements
• Numeric Expressions
• Identifiers
• Formatter Instructions
• Comments
• Registers
• Manipulating Filling and Adjustment
• Manipulating Hyphenation
• Manipulating Spacing
• Tabs and Fields
• Character Translations
• troff and nroff Modes
• Line Layout
• Line Continuation
• Page Layout
• Page Control
• Using Fonts
• Manipulating Type Size and Vertical Spacing
• Colors
• Strings
• Conditionals and Loops
• Writing Macros
• Page Motions
• Drawing Geometric Objects
• Deferring Output
• Traps
• Diversions
• Punning Names
• Environments
• Suppressing Output
• I/O
• Postprocessor Access
• Miscellaneous
• gtroff Internals
• Debugging
• Implementation Differences