| Class | Description | 
|---|---|
| Effect | 
 An effect -- either UIEffect, PolyUIEffect, or SafeEffect. 
 | 
| Effect.EffectRange | |
| GuiEffectChecker | 
 The GUI Effect Checker. 
 | 
| GuiEffectTypeFactory | 
 Annotated type factory for the GUI Effect Checker. 
 | 
| GuiEffectVisitor | 
 Require that only UI code invokes code with the UI effect. 
 |