diff --git a/src/appendix/code-index.md b/src/appendix/code-index.md
index d47cde8c..1dbbec64 100644
--- a/src/appendix/code-index.md
+++ b/src/appendix/code-index.md
@@ -6,17 +6,17 @@ compiler.
 
 Item            |  Kind    | Short description           | Chapter            | Declaration
 ----------------|----------|-----------------------------|--------------------|-------------------
-`BodyId` | struct | One of four types of HIR node identifiers. | [Identifiers in the HIR] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/struct.BodyId.html)
+`BodyId` | struct | One of four types of HIR node identifiers | [Identifiers in the HIR] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/struct.BodyId.html)
 `CodeMap` | struct | The CodeMap maps the AST nodes to their source code | [The parser] | [src/libsyntax/codemap.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/codemap/struct.CodeMap.html)
 `CompileState` | struct | State that is passed to a callback at each compiler pass | [The Rustc Driver] | [src/librustc_driver/driver.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_driver/driver/struct.CompileState.html)
-`ast::Crate` | struct | Syntax-level representation of a parsed crate | [The parser] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/ast/struct.Crate.html)
-`hir::Crate` | struct | More abstract, compiler-friendly form of a crate's AST | [The Hir] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/struct.Crate.html)
-`DefId` | struct | One of four types of HIR node identifiers. | [Identifiers in the HIR] | [src/librustc/hir/def_id.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/def_id/struct.DefId.html)
+`ast::Crate` | struct | A syntax-level representation of a parsed crate | [The parser] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/ast/struct.Crate.html)
+`hir::Crate` | struct | A more abstract, compiler-friendly form of a crate's AST | [The Hir] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/struct.Crate.html)
+`DefId` | struct | One of four types of HIR node identifiers | [Identifiers in the HIR] | [src/librustc/hir/def_id.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/def_id/struct.DefId.html)
 `DiagnosticBuilder` | struct | A struct for building up compiler diagnostics, such as errors or lints | [Emitting Diagnostics] | [src/librustc_errors/diagnostic_builder.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_errors/struct.DiagnosticBuilder.html)
 `DocContext` | struct | A state container used by rustdoc when crawling through a crate to gather its documentation | [Rustdoc] | [src/librustdoc/core.rs](https://github.com/rust-lang/rust/blob/master/src/librustdoc/core.rs)
-`FileMap` | struct | A single source within a `CodeMap` (e.g. the source code within a single file). | [The parser] | [src/libsyntax_pos/lib.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/codemap/struct.FileMap.html)
-`HirId` | struct | One of four types of HIR node identifiers. | [Identifiers in the HIR] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/struct.HirId.html)
-`NodeId` | struct | One of four types of HIR node identifiers. Being phased out. | [Identifiers in the HIR] | [src/libsyntax/ast.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/ast/struct.NodeId.html)
+`FileMap` | struct | Part of the `CodeMap`, mapping a single source file | [The parser] | [src/libsyntax_pos/lib.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/codemap/struct.FileMap.html)
+`HirId` | struct | One of four types of HIR node identifiers | [Identifiers in the HIR] | [src/librustc/hir/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/struct.HirId.html)
+`NodeId` | struct | One of four types of HIR node identifiers. Being phased out | [Identifiers in the HIR] | [src/libsyntax/ast.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/ast/struct.NodeId.html)
 `ParamEnv` | struct | Information about generic parameters or `Self`, useful for working with associated or generic items | [Parameter Environment] | [src/librustc/ty/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/ty/struct.ParamEnv.html)
 `ParseSess` | struct | This struct contains information about a parsing session | [The parser] | [src/libsyntax/parse/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/syntax/parse/struct.ParseSess.html)
 `Rib` | struct | Represents a single scope of names | [Name resolution] | [src/librustc_resolve/lib.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_resolve/struct.Rib.html)
@@ -27,7 +27,7 @@ Item            |  Kind    | Short description           | Chapter            |
 `TraitDef` | struct | This struct contains a trait's definition with type information | [The `ty` modules] |  [src/librustc/ty/trait_def.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/ty/trait_def/struct.TraitDef.html)
 `TraitRef` | struct | The combination of a trait and its input types (e.g. `P0: Trait<P1...Pn>`) | [Trait Solving: Goals and Clauses], [Trait Solving: Lowering impls]  |  [src/librustc/ty/sty.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/ty/struct.TraitRef.html)
 `Ty<'tcx>` | struct | This is the internal representation of a type used for type checking | [Type checking] | [src/librustc/ty/mod.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/ty/type.Ty.html)
-`TyCtxt<'cx, 'tcx, 'tcx>` | type | The "typing context". This is the central data structure in the compiler. It is the context that you use to perform all manner of queries. | [The `ty` modules] | [src/librustc/ty/context.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/ty/struct.TyCtxt.html)
+`TyCtxt<'cx, 'tcx, 'tcx>` | type | The "typing context". This is the central data structure in the compiler. It is the context that you use to perform all manner of queries | [The `ty` modules] | [src/librustc/ty/context.rs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/ty/struct.TyCtxt.html)
 
 [The HIR]: hir.html
 [Identifiers in the HIR]: hir.html#hir-id