Un-minimize any window. The ConverterExample and RegionExample are implementations of code examples from the ECOOP'14 paper Babelsberg/JS - A Browser-based Implementation of an Object Constraint Language. What they demonstrate is explained in their help texts. Click also on the links in the text to open ObjectEditors on relevant code.
The Benchmarks window includes the PerformanceTests presented in the paper. Use the "Run" button to execute once, the "Bench" button to execute a number of times (the numbers are shown in a hover tooltip per test). Use "Browse" to get to the code of the benchmarks. Beware: some benchmarks take a long time to run.
The other windows are further examples. Each window has a help button to explain what the example is about.
The entire Babelsberg implementation is contained in this install, as are Cassowary and DeltaBlue.