diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index 9dff33423e..fc37469b6b 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -241,6 +241,10 @@ export function popup<T extends Component>(
 	};
 }
 
+/**
+ * Open the page with the given path in a pop-up window.
+ * @param path The path of the page to open.
+ */
 export function pageWindow(path: string) {
 	const { dispose } = popup(MkPageWindow, {
 		initialPath: path,