### Table of contents

1. [Core concepts](./core-concepts.md)
    - [Browser](./core-concepts.md#browser)
    - [Browser contexts](./core-concepts.md#browser-contexts)
    - [Pages and frames](./core-concepts.md#pages-and-frames)
    - [Selectors](./core-concepts.md#selectors)
    - [Auto-waiting](./core-concepts.md#auto-waiting)
    - [Execution contexts](./core-concepts.md#execution-contexts)
    - [Object & element handles](./core-concepts.md#object--element-handles)
1. [Input](./input.md)
    - [Text input](./input.md#text-input)
    - [Checkboxes](./input.md#checkboxes)
    - [Select options](./input.md#select-options)
    - [Mouse click](./input.md#mouse-click)
    - [Type characters](./input.md#type-characters)
    - [Keys and shortcuts](./input.md#keys-and-shortcuts)
    - [Upload files](./input.md#upload-files)
    - [Focus element](./input.md#focus-element)
1. Emulation
    - User agent
    - Viewport, color scheme
    - Devices
    - Locale & Timezone
    - Geolocation
    - Permissions
1. Network
    - Navigation & load
    - Waiting for navigation
    - Handling downloads
    - Network events
    - Mocking network
    - Aborting requests
1. Scraping and verification
    - Screenshots
    - Evaluation
1. Selector engines
    - Built-in engines
    - Custom engines
1. Test runners
    - Jest
    - Mocha
    - Karma
    - Jasmine
    - Jasmine
    - Storybooks
1. Continuous integration
    - Git Hub Action
    - Docker images
    - Troubleshooting