Text processing Clause Samples

Text processing. Almost all text is entered through the editor. The commands most often used to write text on a terminal are: cat, pr, ▇▇▇▇, nroff, and troff, all in section I. The cat command simply dumps ASCII text on the terminal, with no processing at all. The pr command paginates the text, supplies headings, and has a facility for multi-column output. Troff and nroff are elabo- rate text formatting programs, and require careful forethought in entering both the text and the formatting commands into the input file. Troff drives a Graphic Systems phototypesetter; it was used to produce this manual. Nroff produces output on a typewriter terminal. ▇▇▇▇ (I) is a somewhat less elaborate text format- ting program, and requires somewhat less forethought.