Adobe©PostScript©is a language used for the layout of both text and graphics. Among other uses for PostScript, most large networked printers, such as those in the Athena clusters expect their input to be in PostScript format. Whenever you print anything, such as a web page, a PostScript document is produced and then sent to the printer. For this reason a large number of programs are capable of outputting postscript files. PostScript files usually have the filename suffix .ps. To view a PostScript file, you can use the program ghostview in the gnu locker (add gnu; ghostview &). To print a PostScript file from a command line, just type lpr file.ps, where ``file.ps'' is of course, the file. In the postscript locker (add postscript) are several utilities for printing PostScript files in condensed form (psnup) and manipulating these files in other ways. You can also produce a document in PostScript format from any program that lets you print. When the printer dialog box pops up, click on the option ``print to file'' (rather than ``to printer'') and specify a file name. There is also the Encapsulated PostScript (suffix .epsi) format, which is used to insert PostScript data (such as figures) into other documents, including LATEX documents and Frame documents.