diff --git a/docs/maps/api-nav.md b/docs/maps/api-nav.md
index 2abc5aff..f5721063 100644
--- a/docs/maps/api-nav.md
+++ b/docs/maps/api-nav.md
@@ -56,7 +56,7 @@ WA.nav.openCoWebSite(url: string, allowApi: boolean = false, allowPolicy: string
 WA.nav.closeCoWebSite(): void
 ```
 
-Opens the webpage at "url" in an iFrame (on the right side of the screen) or close that iFrame. `allowApi` parameter allow the iframe to use the "IFrame API" and communicate with WorkAdventure. `allowPolicy` parameter grant additional rights to the iframe.
+Opens the webpage at "url" in an iFrame (on the right side of the screen) or close that iFrame. `allowApi` allows the webpage to use the "IFrame API" and execute script (it is equivalent to putting the `openWebsiteAllowApi` property in the map). `allowPolicy` grants additional access rights to the iFrame. The `allowPolicy` parameter is turned into an [`allow` feature policy in the iFrame](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe#attr-allow).
 
 Example:
 
@@ -65,4 +65,3 @@ WA.nav.openCoWebSite('https://www.wikipedia.org/');
 // ...
 WA.nav.closeCoWebSite();
 ```
-