The page asks about kind of data extraction - "Search by selected field" or "Retrieve All". List of all searchable field's names and their types (integer, float, string...) is displayed in table with radio buttons. Select a field to search or "Retrieve All" command. In the last case you will be forwarded directly to either Active Browser (Active session) or Database Navigator (HTML session). If a field to search is selected, you will be forwarded to the "Query Builder" for query definition.

Click "Reset" to restore default values (Retrieve All). Click "Continue"... to go on.

Attention! Query builder(s) for numerical search in arrays (spectral search) are not ready now! They will be ready in nearest future and only for Active session!