diff --git a/docs/handbook/03_frames.md b/docs/handbook/03_frames.md
index 53bcd89..b5f022e 100644
--- a/docs/handbook/03_frames.md
+++ b/docs/handbook/03_frames.md
@@ -74,11 +74,11 @@ In the example above, the trays start empty, but it's also possible to populate
```html
- 
+ Set aside emails
```
-Upon loading the imbox page, the set-aside tray is loaded from `/emails/set_aside`, and the response must contain a corresponding `` element as in the original example:
+With some JavaScript, you could replace the link with a spinner when the content starts loading. Upon loading the imbox page, the set-aside tray is loaded from `/emails/set_aside`, and the response must contain a corresponding `` element as in the original example:
```html