2-level keyword search mechanism structured by Keyword Group and its Keywords and values.
File multi-categorization: Definable layered keyword tables multi-categorize any files of any types.
(Keyword Group → multiple Keywords → multiple Keyword Values)
- User-definable keyword tables structurally simplify the complex need of searching.
- Build multiple Keyword Groups.
- Each Keyword Group carries multiple Keywords.
- Each Keyword has multiple values for selection.
