I would like to ask for a feature request which can be useful for the blog post templates.

I've created a template with subheadings that is required for blog posts. (For E.g. Introduction, Heading1, Heading2, Heading3, Conclusion). 

For e.g. In Introduction section, i can add comment as <explain the concept for initial understanding, add the goal what the reader would have achieved at the end of the tutorial and so on>.

When i create a new page out of it, then this comment or greyed out text will help writer on what to write for the Introduction.

For Example, DigitalOcean have their templates available here for writing articles. In each section they have the comments added on what to write for that section.

They have added comment inside the tag <!-- --> as given below. 

Introduction: 
<!-- Introductory paragraph about the topic that explains what this topic is about and why the reader should care; what problem does it solve?In this guide, you will [configure/set up/build/deploy] [some thing]...-->Prerequisite: 
<!-- Prerequisites let you leverage existing tutorials so you don't have to repeat installation or setup steps in your tutorial. Learn more at https://do.co/style#prerequisites --.-->
Conclusion:

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