This video tutorial covers:
- Glass sheet brush, Invisible Collision Hull
- Reset red builder brush, set grid size to 1
- Intersect brush
- BreakingGlass actor and Properties
- Mover Properties

RECOMMENDED READING:

Unreal Wiki : Making Glass Break (UT)
https://wiki.beyondunreal.com/Legacy:Making_Glass_Break

Requires UT GOTY edition for PC (v. 436)

My UnrealEd YouTube videos (full playlist) :
https://www.youtube.com/watch?v=YAZ9Wmg4tYo&list=PLsHIUYkkz0G6CL8sBXw7D6sAEpNhw0gjE

NOTE: Although this software is 17  years old, you can still use this tutorial to familiarize yourself with the interface. The editor for UT3 is very similar (but with new features). 

Let me know what other UnrealEd tutorial videos you would like to see, by posting in the comments below. Thank you for your feedback, positive and negative!

If you have any immediate questions about the editor, visit the UT99 mapping forum here:
https://ut99.org/viewforum.php?f=5

Running time: 10 minutes
Posting date: Feb 19, 2017