Configuring background OtlParallel tasks

High-level OmniThreadLibrary parallelism (i.e. the OtlParallel unit) is great when you are running mostly independent parts of code but what can you do when you want to communicate with the main thread from a task?
A few weeks ago my answer would be along the lines of setting communication channel manually or dropping down to low-level parallelism (i.e. the CreateTask) but both are very complicated solutions. There was certainly a room for better solution.
Since the release 910, released on April 17th, OtlParallel contains much simpler way to configure tasks and to set them up for communication with the owner.

Simple background tasks with OtlParallel

While there’s a simple way to execute one-shot background threads with the low-level OTL API (by calling CreateTask), there is no such high-level function in OtlParallel. At least, there wasn’t one until release 899 was committed to the SVN. (Incidentally, that happened 11 days ago but I was silent about it because I was working on another feature – TaskConfig – which will be completed “really soon now”.)
In short, Parallel.Async accepts an anonymous method, normal method or procedure (all of them must be without parameters) and executes it in a background thread. That’s all.