Near the top of each HyperDic page, there is a navigation bar, with a link labelled "Dictionary", leading to the Alphabetical Word Index. All the words covered in HyperDic are accessible through the alphabetical index.
Each letter links to an index page containing further links to all words starting with that letter. When more than 50 words start with a particular combination of letters, the Index page is subdivided into smaller pages for easier browsing.
To search a word, you can follow the steps outlined in the Search Help.