User interface versions

Every application runs under a specific user interface version. The user interface versions controls the HTML output of the standard application pages (including the surrounding page and doctype) and the use of CSS and javascript. Each user interface version also has its own specific set of functionality. New user interface versions are released to be able to add new functionality as well as to improve the look and feel of the application engine pages, while old user interface versions are kept available so existing applications stay intact.

When you create a new application, it always uses the latest user interface version available. It will automatically use newer versions as they appear. So if you want to create an alternative style for your application and you don't want to risk incompatibility with future versions, you will need to select a particular user interface version for your application to use. You can change this in blueprint properties: Blueprint -> Properties go to User interface tab and edit the User interface version field.

For more info about the various user interface versions: https://studio.crossmarx.nl/engine?service=selector:5089&cmd=search

For more info about migrating between user interface versions: https://studio.crossmarx.nl/page/1117/user-interface-migration-guide