Allows you to create nicely formatted WPF text from code behind with a syntax similar to the way XDocuments work.

FrameworkElement frameworkElement =
    new XSection(new XSubHeading("Heading"),
                    new XParagraph("This is an example of what you can do with XText. You can",
                                new XBold("bold"), "text and do all sorts of nice things like:"),
                    new XParagraph(BlockStyle.Indented, "Indent paragraphs, ",
                                new MyHighlightedText("highlight text"), new XLineBreak(),
                                new XSection("Nest sections", "Which do not continue on a single line"))).
        BuildElement();

You can also optionally print out elements:

bool shouldWrite = true;

new XParagraph("Some text", ()=>shouldWrite)

XSection - Top level structure, each child will be on a new line (StackPanel)
XParagraph - Takes a collection of XInlines to format as a paragraph (TextBlock)
XSpan - Takes a collection of inlines, and is an inline itself (useful for optionally writing out a sentance in a paragraph) (Span)
XRun - Inline text, used for implicit conversion between string and XInline (Run)
XBold - Bold Run
XItalic - Italic Run
XLineBreak - Flow doc line break

XTextElement - The base class representing all possible elements
XInline - Base class representing an inline or flowdoc element
XBlock - Base class for representing a WPF Control, blocks support indentation