Conventions

This tutorial uses the following typographical conventions:

Italic
For program names, filenames, system names, email addresses, and URLs and for emphasizing new terms when first defined
Constant width
In examples showing the output from programs, the contents of files, or literal information
Constant-width italic
General syntax and items that should be replaced in expressions

TIP: Indicates a tip, suggestion, or general note.

WARNING: Indicates a warning or caution.