Where do I get the documentation?

[Most]

When do you think I can receive a documentation of your custom namespace, methods, properties etc. ?

How can I get access to the hierarchy in the document, e.g. the pages, the objects within the pages? -> Only by name? -> How to iterate through the project?

What does the “block”-statement stand for? (block.x= …)

Is it possible to instantiate objects: for example a movie-widget can be opened twice?

[Daniel]

Basic API documentation (including a description of the hierarchy) is almost ready and will be published in a few days. I will let you know.
It is not possible to add widgets dynamically. You can add multiple hidden widgets. Then dynamically show or hide these widgets, change the movie source, etc.