In this document different typefaces are used to distinguish between names, commands, parameters etc. Here is a complete list with examples:

Filenames: myfile.tex
Paths: c:\emtex\texinput
MS-Dos environment variables: COMSPEC
Program names (not file names): WordPerfect
MS-Dos commands:
- dir *.*
where the symbol represents the MS-Dos prompt.
Keys on the keyboard: [A]
Uppercase keys are typeset like this: [İ Shift][A] Unless otherwise stated, upper case and lower case keys are equivalent. In the same way, we will for example use the notation [Alt][{] to indicate that the user has to press the [Alt] key and the key that looks like simultaneously. Keys may look different, depending on the nationality.
Text as it is displayed on the screen: Unknown command
Syntax descriptions: SPDECOMP <inputfile> [outputfile]
In this manual we will assume that the drive 4TeX is installed on is the ?: drive. E.g., if you run 4TeX from CD-rom it will probably be drive D: or E:.