Sugar for OCL

Examples of OCL use often do not exceed a few lines. Larger examples are rare, because the concrete syntax of OCL is verbose and based exclusively on ASCII encoding. This makes it easy to edit OCL in any environment, but hard to layout in a readable manner. A minor issue like presentation affects use in a major way. This paper proposes three shorthand notations, or syntactic sugars, for laying out OCL in the Latex, HTML, and Unicode encoding systems. To avoid splitting the available OCL source code base any further, flavours are convertible via the base syntax. To allow benefit across the community, the representations are OCL versionindependent. To support recognisability, the representations are visually very similar to each other. To simplify reuse, definitions are based on POSIX regular expressions and Unicode.