diff --git a/lib/languages.js b/lib/languages.js
index 250521369..58bc0a681 100644
--- a/lib/languages.js
+++ b/lib/languages.js
@@ -1,6 +1,12 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.KnownLanguage = void 0;
+/**
+ * A language supported by CodeQL that is treated specially by the Action.
+ *
+ * This is not an exhaustive list of languages supported by CodeQL and new
+ * languages do not need to be added here.
+ */
 var KnownLanguage;
 (function (KnownLanguage) {
     KnownLanguage["csharp"] = "csharp";
diff --git a/lib/languages.js.map b/lib/languages.js.map
index 14a5ba974..6cbfd25b7 100644
--- a/lib/languages.js.map
+++ b/lib/languages.js.map
@@ -1 +1 @@
-{"version":3,"file":"languages.js","sourceRoot":"","sources":["../src/languages.ts"],"names":[],"mappings":";;;AAQA,IAAY,aAUX;AAVD,WAAY,aAAa;IACvB,kCAAiB,CAAA;IACjB,4BAAW,CAAA;IACX,0BAAS,CAAA;IACT,8BAAa,CAAA;IACb,0CAAyB,CAAA;IACzB,kCAAiB,CAAA;IACjB,8BAAa,CAAA;IACb,8BAAa,CAAA;IACb,gCAAe,CAAA;AACjB,CAAC,EAVW,aAAa,6BAAb,aAAa,QAUxB"}
\ No newline at end of file
+{"version":3,"file":"languages.js","sourceRoot":"","sources":["../src/languages.ts"],"names":[],"mappings":";;;AAGA;;;;;GAKG;AACH,IAAY,aAUX;AAVD,WAAY,aAAa;IACvB,kCAAiB,CAAA;IACjB,4BAAW,CAAA;IACX,0BAAS,CAAA;IACT,8BAAa,CAAA;IACb,0CAAyB,CAAA;IACzB,kCAAiB,CAAA;IACjB,8BAAa,CAAA;IACb,8BAAa,CAAA;IACb,gCAAe,CAAA;AACjB,CAAC,EAVW,aAAa,6BAAb,aAAa,QAUxB"}
\ No newline at end of file
diff --git a/src/languages.ts b/src/languages.ts
index 702c53ecc..d36316d04 100644
--- a/src/languages.ts
+++ b/src/languages.ts
@@ -1,11 +1,12 @@
-/**
- * A CodeQL language.
- *
- * To facilitate adding new languages, this is a typedef rather than an
- * exhaustive list of languages supported by CodeQL.
- */
+/** A language supported by CodeQL. */
 export type Language = string;
 
+/**
+ * A language supported by CodeQL that is treated specially by the Action.
+ *
+ * This is not an exhaustive list of languages supported by CodeQL and new
+ * languages do not need to be added here.
+ */
 export enum KnownLanguage {
   csharp = "csharp",
   cpp = "cpp",