Controls to iterate over placeholders

Situation

Consider the following template:
![image](

The template contains 2 placeholders (marked above).
Now imagine a template with many such paragraphs, along with deeply ingrained placeholders (as is the case in above image) for name, designation, address, etc.

As of now, it's very likely that the placeholders will be missed when creating a new document out of this template.

Solution (Feature request)

Having a set of controls which would allow the user to navigate through these placeholders would solve this problem completely.

Reference

Think of Google-doc's history feature, where the UI would has controls for the user to be able to navigate through the changes made in the doc.