Teach Yourself Perl In 21 Days

This book uses different typefaces to help you differentiate between Perl code and regular English, and also to help you identify important concepts. l Actual Perl code is typeset in a special monospace font. You'll see this font used in listings and the Input-Output examples, as well as in code snippets. In the explanations of Perl features, commands, filenames, statements, variables, and any text you see on the screen also are typeset in this font. l Command input and anything that you are supposed to enter appears in a bold m onospace font. You'll see this mainly in the Input-Output examples. l Placeholders in syntax descriptions appear in an italic monospace font. Replace the placeholder with the actual filename, parameter, or whatever element it represents. l Italics highlight technical terms when they first appear in the text and are sometimes used to emphasize important points.