| .asc, .ascii |
"plain" format, used mainly for data to be read by "every" computer algebra system |
| .dvi | standard output of TeX systems, to be read on screen or printed by corresponding DVIdrivers |
| .gif | standard picture format, usually can be viewed directly by browser |
| .gif.gz | standard picture format, compressed by UNIX utility gzip; most browsers can be instructed to uncompress the file and show the picture |
| .htm, .html |
native WWW file. At present I adhere to HTML 3.2 standard (known as Wilbur), recent versions of main browsers understand it |
| .nb | MATHEMATICA notebook, can be proceeded by MATHEMATICA starting from version 3.0. Also can be viewed by free MATHEMATICA Reader |
| .ps | PostScript file to be printed on printers understanding this language. With corresponding software can be viewed on screen and printed on non-PostScript printers |
| .ps.gz | PostScript file, compressed by UNIX utility gzip |
| .tex | LaTex2.09 or LaTex2e file |
| .txt | "plain" text file |