I have raised a request with Mangesh.Shelar and Sanjivani Ichake to produce a Blog to explain the operation of this Item Type Expression.
Product Backlog Item # 673214 Item Type Expression GetRelated (MicroStation Communities Blog)
AndrevR said:Does it look like the ‘Fields Editor’ from Insert Field?
No. The builder is quite basic now, but in my opinion it's very good step forward:
AndrevR said:Hopefully this will be published soon.
I assume it will be publicly available…