gtroff provides very low-level operations for formatting a
document. There are many common routine operations that are done in
all documents. These common operations are written into macros
and collected into a macro package.
All macro packages provide certain common capabilities that fall into the following categories.
|• Sections and Chapters:|
|• Headers and Footers:|
|• Page Layout Adjustment:|
|• Footnotes and Annotations:|
|• Table of Contents:|
|• Paper Formats:|
|• Multiple Columns:|
|• Font and Size Changes:|
|• Predefined Strings:|
|• Preprocessor Support:|
|• Configuration and Customization:|