| readData | Language.Drasil.Code.Imperative.Import | 
| readDataProc | Language.Drasil.Code.Imperative.Import | 
| ReadME | Language.Drasil.Choices, Language.Drasil.Code | 
| readMe |   | 
| 1 (Function) | Language.Drasil.Code.Imperative.GOOL.ClassInterface, Language.Drasil.Code | 
| 2 (Function) | Language.Drasil.Code.Imperative.GOOL.LanguageRenderer.LanguagePolymorphic | 
| ReadMeInfo |   | 
| 1 (Type/Class) | Language.Drasil.Code.Imperative.ReadMe.Import | 
| 2 (Data Constructor) | Language.Drasil.Code.Imperative.ReadMe.Import | 
| readMeName | Language.Drasil.Code.Imperative.GOOL.LanguageRenderer | 
| readWithDataDesc | Language.Drasil.Code.Imperative.ReadInput, Language.Drasil.Code | 
| Record | Language.Drasil.Code.ExternalLibrary | 
| recordArg | Language.Drasil.Code.ExternalLibrary, Language.Drasil.Code | 
| recordArgFill | Language.Drasil.Code.ExternalLibraryCall, Language.Drasil.Code | 
| RecordF | Language.Drasil.Code.ExternalLibraryCall, Language.Drasil.Code | 
| Ref | Language.Drasil.Chunk.Parameter | 
| Regular | Language.Drasil.Code.ExternalLibrary | 
| RegularF | Language.Drasil.Code.ExternalLibraryCall, Language.Drasil.Code | 
| relTol | Language.Drasil.Data.ODEInfo, Language.Drasil.Code | 
| renderC | Language.Drasil.Code.Imperative.Import | 
| Repeat | Language.Drasil.Code.DataDesc | 
| repeated | Language.Drasil.Code.DataDesc, Language.Drasil.Code | 
| Result | Language.Drasil.Code.ExternalLibrary | 
| Return | Language.Drasil.Code.ExternalLibrary | 
| returnExprList | Language.Drasil.Code.ExternalLibrary, Language.Drasil.Code | 
| returnExprListFill | Language.Drasil.Code.ExternalLibraryCall, Language.Drasil.Code | 
| RK45 | Language.Drasil.Data.ODEInfo, Language.Drasil.Code | 
| Runnable |   | 
| 1 (Type/Class) | Language.Drasil.Code.Imperative.Build.AST | 
| 2 (Data Constructor) | Language.Drasil.Code.Imperative.Build.AST | 
| RunType | Language.Drasil.Code.Imperative.Build.AST |