Index - T
| Tag | Data.Effect.Tag |
| tag | Control.Effect.Transform |
| Tagged | Data.Effect.Tag |
| TaggedLabel | Data.Effect.Tag |
| taggedPerformerConf | Data.Effect.TH |
| Tell | |
| 1 (Type/Class) | Data.Effect.Writer, Data.Effect |
| 2 (Data Constructor) | Data.Effect.Writer, Data.Effect |
| tell | Data.Effect.Writer |
| tell' | Data.Effect.Writer |
| tell'' | Data.Effect.Writer |
| tell'_ | Data.Effect.Writer |
| TellLabel | Data.Effect |
| There | Data.Effect.OpenUnion |
| Throw | |
| 1 (Type/Class) | Data.Effect.Except, Data.Effect |
| 2 (Data Constructor) | Data.Effect.Except, Data.Effect |
| throw | Data.Effect.Except |
| throw' | Data.Effect.Except |
| throw'' | Data.Effect.Except |
| throw'_ | Data.Effect.Except |
| ThrowLabel | Data.Effect |
| Timer | Data.Effect.Concurrent.Timer |
| TimerLabel | Data.Effect.Concurrent.Timer |
| transAll | Control.Effect.Transform |
| transform | Control.Effect.Transform |
| translate | Control.Effect.Transform |
| translateFor | Control.Effect.Transform |
| translateIn | Control.Effect.Transform |
| translateOn | Control.Effect.Transform |