The Hello World sample is a nice starting point to show the syntax and capabilities of every new language. This test is also useful for code generators and Domain Specific Languages (DSLs) also as a proof of concept.
Following this honorable tradition, I have created a video showing the capabilities of Essential: the tool I am working on for doing agile Model Driven Development.
In this 10 minutes video you will get a general idea of the DSL the language provides to create:
and control transformations
In order to see the details, jump to Vimeo, activate the High Definition mode (HD) and set full screen (sorry embebed version is not good enough).