Script Editor
The Script Editor window in UnrealEd lets you look at class scripts. Open it by doing UnrealEd Main Menu → View → Show Script Editor.
The Script Editor is where you can make real changes to the gameplay of Unreal, beyond simple level and item creation. You can Create A Subclass or recompile classes that already have actors in the map (but note: Do Not Alter Default Packages!).
Quirks
- Pasting code from a text editor confuses the syntax highlighter, and the pasted text may appear black on black. Double-click the class name in the list on the left to refresh the highlighting.
- the Default Properties properties block of a class is not displayed in the editor, and adding one will cause an error. Access defaults properties of a class by right-clicking it in the Actor Browser.