In RE, a mock-up primarily serves for specifying and validating user interfaces.
The CPRE Glossary covers the core terms of Requirements Engineering. The definitions of the terms are generally given in English and have not been translated. This avoids any vagueness or room for interpretation that may result from translations. In addition, the terms of the CPRE Glossary are harmonized with the terminology of the ISTQB.
The online glossary corresponds to the version available for download and is the central reference for the CPRE Foundation Level and the CPRE Advanced Level. For the Advanced Level RE@Agile, a supplementary glossary that defines the terms for Requirements Engineering in the agile environment is available for download.