https://learning.bentley.com/learn/courses/712/creating-item-type-reports/lessons/1436/creating-item-type-reports

54 minutes long

0:00 Item Types Overview

7:28 Building a MicroStation Report

Build it in a file with the feature types you need.

33:00 Expression Builder


50:10  Exporting Reports into DGNLIB

51:29 -  file:///C:/Users/owner/AppData/Local/Temp/Bentley/OpenRoadsDesigner/23.0.0/expression_symbols.html