Pro WPF in C# 2010: Windows Presentation Foundation in .NET 4

28.1. Understanding Documents

WPF separates documents into two broad categories:

• Fixed documents These are typeset, print-ready documents. The positioning of all content is fixed (for example, the way text is wrapped over multiple lines and hyphenated can't change). Although you might choose to read a fixed document on a computer monitor, fixed documents are intended for print output. Conceptually, they're equivalent to Adobe PDF files. WPF includes a single type of fixed document, which uses Microsoft's XPS (XML Paper Specification) standard.

• Flow documents. These are documents that are designed for viewing on a computer. Like fixed documents, flow documents support rich layout. However, WPF can optimize a flow document based on the way you ...