5 Notation

5.2 Lexical type

The lexical types of attributes and data content are specified by conventional comments beginning with the word "Lextype" or "Ulextype", followed by a lexical model in the "HyTime lexical model notation" (HyLex) (see A.2.3 HyTime lexical model notation (HyLex)). The word "Lextype" signifies a normalized lexical model, while "Ulextype" signifies an unnormalized one. The lexical type names used in conventional comments are defined in the HyTime lexical type set (see C.1 HyTime Lexical Types).

Names matching ATTNAME tokens in lexical types are searched for first in the client element or entity, followed by each architectural element or entity in the chain from the client element or entity to and including the architectural element or entity to which the ATTNAME lextype applies.

Names matching NOTATION tokens in lexical types are searched for first in the client document, followed by each architectural document in the chain from the client document to and including the architectural document to which the NOTATION lextype applies.

NOTE 66 HyLex is not only used to document architectures. It is part of the General Architecture and can therefore be used by application designers as well. However, use of HyLex in conventional comments in this International Standard does not require that implementations support its use by applications.

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