This Recommendation is part of the set of Specification and description language Recommendations for SDL-2008. It adds notation shorthand (such as asterisk state) that make the language easier to use and more concise, and various annotations that make models easier to understand (such as comments or create lines), but does not add to the formal semantics of the models. The shorthand notations are transformed from the concrete syntax of ITU-T Z.103 to concrete syntax that is allowed by ITU-T Z.102 or ITU-T Z.101.