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Requirement G.1: Backward compatibility
The language must should be backwardly compatible with any version of the language that has previously been adopted as an IHTSDO standard. Please note that this requirement is not applicable to this version of the Template Syntax, as no previous version has been published as an IHTSDO standardNote that the only exception to this rule is where an error in the syntax has been identified and subsequently fixed.
Requirement G.2: Consistency
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Non-technical stakeholders require that the language is as human readable as possible, while still meeting the other requirements. This is essential for both the clinical validation of expressionslanguage instances, as well as for the education and training required to author expressions.