Please provide documentation for "how to implement custom sections"

[erickloss]

For now, it is not clear how to implement custom section form elements. Please provide some documentation or a simple example how to use:

Fusion:

• Neos.Form.Builder:SectionFormElement.Definition
• Neos.Form:Section / Neos.Form.FusionRenderer:AbstractSection

NodeType Def:

• Neos.Form.Builder:Section

Thank you.
Cheers
Eric

[erickloss]

What we want to do:

• additional node type properties
• custom rendering of sections
• custom node type constraints on the elements collection of our own section node type