| UC | Language.Drasil.Chunk.Unital, Language.Drasil |
| uc | Language.Drasil.Chunk.Unital, Language.Drasil |
| uc' | Language.Drasil.Chunk.Unital, Language.Drasil |
| UCh | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| ucStaged | Language.Drasil.Chunk.Unital, Language.Drasil |
| ucStaged' | Language.Drasil.Chunk.Unital, Language.Drasil |
| ucuc | Language.Drasil.Chunk.Unital, Language.Drasil |
| ucw | Language.Drasil.Chunk.Unital, Language.Drasil |
| UD | Language.Drasil.Chunk.UnitDefn, Language.Drasil |
| UDefn | Language.Drasil.UnitLang |
| udefn | Language.Drasil.Classes |
| UFunc | |
| 1 (Type/Class) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Type/Class) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Type/Class) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| uFunc | Language.Drasil.ModelExpr.Convert |
| UFuncB | |
| 1 (Type/Class) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Type/Class) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Type/Class) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| uFuncB | Language.Drasil.ModelExpr.Convert |
| UFuncVN | |
| 1 (Type/Class) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Type/Class) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Type/Class) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| uFuncVN | Language.Drasil.ModelExpr.Convert |
| UFuncVV | |
| 1 (Type/Class) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Type/Class) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Type/Class) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| uFuncVV | Language.Drasil.ModelExpr.Convert |
| UID | Language.Drasil.UID, Language.Drasil |
| uid | Language.Drasil.UID, Language.Drasil |
| UlC | Language.Drasil.Document.Core, Language.Drasil |
| ulcc | Language.Drasil.Document, Language.Drasil |
| UnaryOp | |
| 1 (Data Constructor) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Data Constructor) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Data Constructor) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| UnaryOpB | |
| 1 (Data Constructor) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Data Constructor) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Data Constructor) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| UnaryOpVN | |
| 1 (Data Constructor) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Data Constructor) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Data Constructor) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| UnaryOpVV | |
| 1 (Data Constructor) | Language.Drasil.Expr.Lang, Language.Drasil.Expr.Development |
| 2 (Data Constructor) | Language.Drasil.ModelExpr.Lang, Language.Drasil.ModelExpr.Development |
| 3 (Data Constructor) | Language.Drasil.CodeExpr.Lang, Language.Drasil.CodeExpr.Development |
| unc | Language.Drasil.Uncertainty, Language.Drasil |
| uncert | Language.Drasil.Uncertainty |
| UncertainChunk | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| Uncertainty | Language.Drasil.Uncertainty, Language.Drasil |
| UncertQ | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| uncPrec | Language.Drasil.Uncertainty, Language.Drasil |
| uncrtnChunk | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| uncrtnw | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| uncty | Language.Drasil.Uncertainty, Language.Drasil |
| uncVal | Language.Drasil.Uncertainty, Language.Drasil |
| underConsidertn | Language.Drasil.Document.Combinators, Language.Drasil |
| unicodeConv | Language.Drasil.Symbol.Helpers, Language.Drasil |
| unit | Language.Drasil.Chunk.Unitary, Language.Drasil |
| UnitalChunk | Language.Drasil.Chunk.Unital, Language.Drasil |
| Unitary | Language.Drasil.Chunk.Unitary, Language.Drasil |
| unitary | Language.Drasil.Chunk.Unitary, Language.Drasil |
| unitary' | Language.Drasil.Chunk.Unitary, Language.Drasil |
| UnitaryChunk | Language.Drasil.Chunk.Unitary, Language.Drasil |
| unitCon | Language.Drasil.Chunk.UnitDefn, Language.Drasil |
| UnitDefn | Language.Drasil.Chunk.UnitDefn, Language.Drasil |
| UnitEq | Language.Drasil.Classes |
| uniteq | Language.Drasil.Classes |
| UnitSymbol | Language.Drasil.UnitLang |
| unitWrapper | Language.Drasil.Chunk.UnitDefn, Language.Drasil |
| unit_symb | Language.Drasil.Chunk.Unitary, Language.Drasil |
| unknownVect | Language.Drasil.Chunk.DifferentialModel, Language.Drasil |
| UnlabelledContent | Language.Drasil.Document.Core, Language.Drasil |
| UnlblC | Language.Drasil.Document.Core, Language.Drasil |
| unlbldCode | Language.Drasil.Document.Contents, Language.Drasil |
| unlbldExpr | Language.Drasil.Document.Contents, Language.Drasil |
| Unpublished | Language.Drasil.Data.Citation, Language.Drasil |
| unwrap | Language.Drasil.Document.Combinators, Language.Drasil |
| UpFrom | Language.Drasil.Space, Language.Drasil |
| Upper | Language.Drasil.Sentence.Fold, Language.Drasil |
| upperLeft | Language.Drasil.Symbol.Helpers, Language.Drasil |
| UpTo | Language.Drasil.Space, Language.Drasil |
| uq | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| uqc | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| uqcND | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |
| URI | |
| 1 (Data Constructor) | Language.Drasil.Label.Type, Language.Drasil |
| 2 (Type/Class) | Language.Drasil.URI.AST |
| URL | |
| 1 (Data Constructor) | Language.Drasil.Data.Citation, Language.Drasil |
| 2 (Data Constructor) | Language.Drasil.URI.AST |
| US | Language.Drasil.UnitLang, Language.Drasil |
| UScale | Language.Drasil.UnitLang |
| Username | Language.Drasil.URI.AST |
| UShift | Language.Drasil.UnitLang |
| USymb | Language.Drasil.UnitLang, Language.Drasil |
| usymb | Language.Drasil.Classes, Language.Drasil |
| USynonym | Language.Drasil.UnitLang |
| uvc | Language.Drasil.Chunk.UncertainQuantity, Language.Drasil |