It is possible to view and change your lists in a similar way using either your phone or the Web Browser. Most commands are available on the phone or through the Web Browser. However, the way the commands are accessed differs between the phone and the Web Browser, and can also vary from phone to phone, especially, when the phones are from different manufacturers.
The overview describes how the lists are structured in general. Then there are separate pages on how to access and update your lists depending on whether you are using a phone or a Web Browser. However whichever method you are using the commands perform the same function. So there is only one page per command.