I think it is comparable in function to Kogo's Joseki Dictionary, curated by Alexander Dinerchtein (3p). e.g: http://eidogo.com/ http://eidogo.com/ Just that i

I think it is comparable in function to Kogo's Joseki Dictionary, curated by Alexander Dinerchtein (3p). e.g: http://eidogo.com/ http://eidogo.com/ Just that it covers the entire fuseki rather than just a corner. As you get deeper into a branch it doesn't provide many variations, nor it explains why a variation is better than another. Joseki dictionaries sometimes will tell you one move is a mistake and show you how to punish it.