The access is free even if not for all services, because full access to the entire products requires an affiliation. The amount of info available for free is nevertheless remarkable and well organized also thanks to many free trial opportunities.
The access to the dictionary online is free, even if full access to the complete editions requires a fee subscription. Trial forms are nevertheless available to the unabridged version
Large quantity of info related to each keyword. Not only an entry description is available, but also related info, retrievable by hyperlinks and external links
External websites and related links are always included in each keyword description as well as hypertextual links to other entries and concept definitions