revit arch. 2008 - datums, crop regions and scope boxes I have absolutely no doubt that many people continue to struggle with Datum objects in relation to Views, Crop Regions and Scope Boxes. There are some things that just cannot be explained with words and still diagrams. Behold all the answers in this CADclip tutorial series. I thought I knew it all myself until I was challenged in creating these lessons. Get yourself some refreshment, sit back and let the information flow from me to you.   CADclips Login required to access these lessons. Lesson 1: Crop Regions Lesson 2: Level Datums Lesson 3: Levels and Plan Views Lesson 4: Grid Datums Lesson 5: Reference Plane Datums Lesson 6: Intersecting Datums and Views Part 1 Lesson 7: Intersecting Datums and Views Part 2 Lesson 8: Scope Box Theory Lesson 9: Scope Box Basics Lesson 10: Scope Box with Datums in Elevation Lesson 11: Scope Box with Datums in Plan Lesson 12: Delete Scope Box Cleanup Lesson 13: Scope boxes Associated to a View Lesson 14: Demo - Nested Scope Box Datum Control Lesson 15: Setup - Nested Scope Box Datum Control This Series is now complete.