appendix B Supported metadata keys Here's a quick reference for the metadata models and keys that are supported in the latest version of Tika, as of 1.0. The models are briefly described, as are the metadata keys associated with them. The keys are found in the Tika code package org.apache.tika.metadata and its associated classes. B.1 Climate Forecast The Climate Forecast ( CF ) metadata model is used to describe climate-relevant data stored in NetCDF files. Tika currently supports a subset of the metadata keys: ACKNOWLEDGEMENT --An acknowledgment that is traditionally added describing the sponsor and contributors to the generation of the associated data file. COMMAND_LINE --The command line used to generate this data. COMMENT --Free-text comments from the data provider. CONTACT --Information such as email, phone, address, and so on for getting more informa-