Commands are instructions that you set in the administrative dashboard of our service. They are spread all around the world with CDN, and all users have the last copy of your instructions. Commands, in a nutshell, are something like this: 'make this if a user says that'. For example, if a user says 'red shoes', and you defined this type of search in your commands interface - the user is redirected to the address you specified or to the website search if you don't have a command for that.