Info blocks are needed to retrieve information from objects like server, channel, roles, members, users or messages. Each object has corresponding properties, which are displayed in the drop down menu with a description. Other related objects can also be queried via an object. If you get a member object, you can find out the server of the member. In this case another Info Block would be needed to find out the properties of the server like the server name.
The output of the Info Block can also have any type. These are behind the descriptions in . All possible outputs are [objects], [lists], [texts], [numbers] or [boolean].