Recommendation ITU-T Z.103 defines the shorthand and annotation features of the Specification and Description Language. Together with Recommendations ITU-T Z.100, ITU-T Z.101, ITU-T Z.102, ITU-T Z.104, ITU-T Z.105, ITU-T Z.106 and ITU-T Z.107, this Recommendation is part of a reference manual for the language. The language defined in this document covers features of the language not included in Basic SDL-2010 in Recommendation ITU-TZ.101 or Comprehensive SDL-2010 in Recommendation ITU-T Z.102. Features defined in this Recommendation either do not have their own abstract grammar and are transformed to concrete grammar defined by Recommendations ITU-T Z.101, ITU-T Z.102 and ITU-T Z.104 (and ITU-T Z.107 for object-oriented data), or are annotations with no formal meaning.