diff --git a/README.md b/README.md
index 2e513d3..3e0d7fa 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# README
+# type-unlambda
 
 [![MIT License][]](LICENSE)
 
@@ -37,8 +37,9 @@ type-unlambda:
 To write loops in TypeScript's type system, we have to use recursions,
 like we do in other purely functional programming languages. Meanwhile, we use
 [CPS][] to implement continuations, which also introduces heavy recursion.
-However, TypeScript's type system is not meant for general purpose programming,
-and recursion has its limits.
+
+However, TypeScript's type system is not meant for general purpose programming.
+There is no [TCE][Tail Call], and recursion has its limits.
 
 In [src/compiler/checker.ts][TSC checker], there is a hard-coded limit for
 type instantiation:
@@ -64,6 +65,7 @@ in `node_modules`, until the error no longer applies. Changing
 [MIT License]: https://img.shields.io/badge/license-MIT-blue.svg
 [Unlambda]: http://www.madore.org/~david/programs/unlambda/
 [CPS]: https://en.wikipedia.org/wiki/Continuation-passing_style/
+[Tail Call]: https://en.wikipedia.org/wiki/Tail_call/
 [TSC checker]:
 https://github.com/microsoft/TypeScript/blob/v4.1.2/src/compiler/checker.ts
 [PR 29602]: https://github.com/microsoft/TypeScript/pull/29602
diff --git a/package-lock.json b/package-lock.json
index 6d7efb9..187833f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,14 +1,14 @@
 {
-  "name": "@esolangs/type-unlambda",
-  "version": "0.2.2",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "typescript": {
-      "version": "4.3.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.2.tgz",
-      "integrity": "sha512-zZ4hShnmnoVnAHpVHWpTcxdv7dWP60S2FsydQLV8V5PbS3FifjWFFRiHSWpDJahly88PRyV5teTSLoq4eG7mKw==",
-      "dev": true
+    "name": "@esolangs/type-unlambda",
+    "version": "0.2.2",
+    "lockfileVersion": 1,
+    "requires": true,
+    "dependencies": {
+        "typescript": {
+            "version": "4.3.2",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.2.tgz",
+            "integrity": "sha512-zZ4hShnmnoVnAHpVHWpTcxdv7dWP60S2FsydQLV8V5PbS3FifjWFFRiHSWpDJahly88PRyV5teTSLoq4eG7mKw==",
+            "dev": true
+        }
     }
-  }
 }