こんにちはTAG！Bonjour le TAG!

I'm requesting a TAG review of:

• Name: Portals
• Specification URL: very early draft
• Explainer, Requirements Doc, or Example code: explainer, use cases, design considerations
• Tests: N/A
• Primary contacts: @KenjiBaheux, @jeremyroman, @lucasgadani

Further details (optional):

• Relevant time constraints or deadlines: early feedback highly appreciated.
• I have read and filled out the Self-Review Questionnare on Security and Privacy.
• I have reviewed the TAG's API Design Principles

You should also know that...

• Background for this work:
• TAG finding
• AMP blog post
• WICG thread
• Demos at Chrome Dev Summit with a prototype: this might help understand some of the use cases.
• There is an experimental implementation in Chrome but it's missing key features. We expect to have something useful behind the flag in a couple of weeks.

We'd prefer the TAG provide feedback as (please select one):

• open issues in our Github repo for each point of feedback
• open a single issue in our Github repo for the entire review
• leave review feedback as a comment in this issue and @-notify: KenjiBaheux, jeremyroman, lucasgadani (because the repo is temporary)