> ## Documentation Index
> Fetch the complete documentation index at: https://docs.box.com/llms.txt
> Use this file to discover all available pages before exploring further.

# iOS Annotations: Highlight region and highlight text

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Today, the feedback and review process is overly complex and inefficient.

* Feedback is dispersed across emails and other chat tools
* Comments are not in-line, so it's unclear what content a comment is referring to
* Reviewers need to open the app the file was created in to leave comments

With annotations on iOS, users can now review and leave comments directly within file preview.

**Highlight Region**

If users need to indicate a certain part of a document for editing, they can make use of the highlight region annotation. This allows users to draw a Box around a section of the document, and add a comment. Optionally, they can also @mention another collaborator on the file to draw their attention to the annotation.

To do this:

* Open the file in **Preview** on an iPhone or iPad.
* Tap on the **annotations** **icon** at the bottom of the preview screen to open the annotations toolbar. You will see a set of tools appear.
* Next, select the **highlight region tool**.
* Tap and drag anywhere on the file itself to draw a box.
* After lifting your finger, the comment field will appear by default. Add a comment and tap “**Save**”.

**Highlight Text**

Users will also now be able to highlight and leave text comments on any part of a document or an image and @ mentioned collaborators will receive an email notification and a push notification on their mobile device.

To do this:

* Open the file in **Preview** on an iPhone or iPad.
* Tap on the **annotations** **icon** at the bottom of the preview screen to open the annotations toolbar. You will see a set of tools appear.
* Next, select the **highlight text tool.**
* Tap and drag on a section of text within the file itself to highlight it.
* After lifting your finger, the comment field will appear by default. Add a comment and tap “**Save**”.