C#: Sytax-Highlightning for SpinText in Richtext Control

A solution for syntax-highlightning for "SpinText"-Syntax needs to be delivered. The text needs to be displayed in the standard richtext control of Microsoft Visual Studio 2008. An example of "SpinText"-Syntax is: This is a {clever|stupid} example. The "Spin Set" {clever|stupid} needs to be formatted based on special rules described in the attached file. Nested Spin Sets and some other usability features, described in the attached document, need to be covered by the solution too. Environment: C#, .NET 3.5, Microsoft Visual Studio 2008 NOTE: If you can provide a solution based on another control to use with C#, .NET 3.5 and Microsoft Visual Studio 2008 that's OK too, but read the "Important Notice" in the attached document in that case.