For full details including the historical background to ECL please see: Expression Constraint Language - Specification and Guide Appendix A of that guide has links to various examples - the Appendix overview is reproduced here, including active links to its sub-pages. Below the Appendix overview, its sub-page The following examples of simple ECL expressions are reproduced from the above guide section A.1 Simple Expression Constraints - Valid Expressions.The other guide sections in its Appendix A may be of interest: is also reproduced here as a quick-reference.
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