Hyperlinked

you can jump to any reference in IPC, or from the Catchwords into the Classification, or from a Catchword to a related Catchword

Multilingual

it contains the Classifications in the authentic languages and in Hungarian you can switch between languages

Multi-version

seven editions of IPC are published single versions of the Nice, Vienna and Locarno classifications are added hyperlinked concordance lists to preceding versions transitive jumps to earlier versions

Hierarchical

you can browse hierarchically you can search on branches of the hierarchy

Full-text

you can browse the full-text of IPC Boolean and proximity search