You can use the following tools to edit, convert, and otherwise manipulate text.
Pattern-matching language for textual database files.
Tool that selects columns for display.
Line editor underlying vi .
Produces roughly uniform line length.
Document formatting system that can render troff typesetting macros to PostScript, HTML, and other formats.
Merges different columns into a database.
Merges columns or switches their order.
Simple text editor designed for use with the Pine mailer. Note that the version of pine that ships with Mac OS X is much older than the current release.
Converts Texinfo to HTML.
Command that substitutes or deletes characters .
Visual text editor.