How do Apple shortcuts cause the browser to send messages to

1. First, find "Shortcut Commands" on the mobile phone desktop, open it and click "Create Shortcut Command".

2. Next, click "Add Action", select the app or application you want to add a command to, click the "i" button in the upper right corner of the application, select "Add to this shortcut" and enter the name of the shortcut. Click "Done" in the upper right corner.

3. As a final test, return to the main interface and say "Hey Siri + the name of the command you just saved" to your phone.