diff --git a/template/README.md b/template/README.md
index c85e544720b..8315f3074b0 100644
--- a/template/README.md
+++ b/template/README.md
@@ -63,6 +63,7 @@ You can find the most recent version of this guide [here](https://github.com/fac
   - [Now](#now)
   - [S3 and CloudFront](#s3-and-cloudfront)
   - [Surge](#surge)
+- [Advanced Configuration](#advanced-configuration)
 - [Troubleshooting](#troubleshooting)
   - [`npm start` doesn’t detect changes](#npm-start-doesnt-detect-changes)
   - [`npm test` hangs on macOS Sierra](#npm-test-hangs-on-macos-sierra)
@@ -1289,6 +1290,19 @@ Install the Surge CLI if you haven't already by running `npm install -g surge`.
 
 Note that in order to support routers that use HTML5 `pushState` API, you may want to rename the `index.html` in your build folder to `200.html` before deploying to Surge. This [ensures that every URL falls back to that file](https://surge.sh/help/adding-a-200-page-for-client-side-routing).
 
+## Advanced Configuration
+
+You can adjust various development and production settings by setting environment variables in your shell or with [.env](#adding-development-environment-variables-in-env).
+
+Variable | Development | Production | Usage
+:--- | :---: | :---: | :---
+BROWSER | :white_check_mark: | :x: | By default, Create React App will open the default system browser, favoring Chrome on macOS. Specify a [browser](https://github.com/sindresorhus/opn#app) to override this behavior, or set it to `none` to disable it completely.
+HOST | :white_check_mark: | :x: | By default, the development web server binds to `localhost`. You may use this variable to specify a different host.
+PORT | :white_check_mark: | :x: | By default, the development web server will attempt to listen on port 3000 or prompt you to attempt the next available port. You may use this variable to specify a different port.
+HTTPS | :white_check_mark: | :x: | When set to `true`, Create React App will run the development server in `https` mode.
+PUBLIC_URL | :x: | :white_check_mark: | Create React App assumes your application is hosted at the serving web server's root or a subpath as specified in [`package.json` (`homepage`)](#building-for-relative-paths). Normally, Create React App ignores the hostname. You may use this variable to force assets to be referenced verbatim to the url you provide (hostname included). This may be particularly useful when using a CDN to host your application.
+CI | :large_orange_diamond: | :white_check_mark: | When set to `true`, Create React App treats warnings as failures in the build. It also makes the test runner non-watching. Most CIs set this flag by default.
+
 ## Troubleshooting
 
 ### `npm start` doesn’t detect changes