| BaseSI | Language.Drasil.UnitLang |
| Bib | Language.Drasil.Document.Core, Language.Drasil |
| BibRef | Language.Drasil.Chunk.Citation, Language.Drasil |
| Book | Language.Drasil.Data.Citation, Language.Drasil |
| Booklet | Language.Drasil.Data.Citation, Language.Drasil |
| BookTitle | Language.Drasil.Data.Citation, Language.Drasil |
| bookTitle | Language.Drasil.Data.Citation, Language.Drasil |
| BoolBinaryOp | |
| 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) | Drasil.Code.CodeExpr.Lang, Drasil.Code.CodeExpr.Development |
| BoolBinOp | |
| 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) | Drasil.Code.CodeExpr.Lang, Drasil.Code.CodeExpr.Development |
| boolBinOp | Language.Drasil.ModelExpr.Convert |
| Boolean | Language.Drasil.Space, Language.Drasil |
| Bounded | Language.Drasil.Space, Language.Drasil |
| BoundedDD | Language.Drasil.Space, Language.Drasil |
| Bullet | Language.Drasil.Document.Core, Language.Drasil |
| bulletFlat | Language.Drasil.Document.Combinators, Language.Drasil |
| bulletNested | Language.Drasil.Document.Combinators, Language.Drasil |