Hydra Packages.
Hydra can be purchased in the following package deals:
Hydra Light (intended for mailings up to 30,000 items)
Hydra Professional
Hydra Premier (includes Operator Intervention & Kronus DataSet)

Kronus DataSet is an extremely useful tool for viewing your data & visually defining fields for use with Kronus Io document formatting package, Kronus Hermes mailsort package & Kronus Hydra deduplication package. Using DataSet eliminates errors when defining your record layouts.