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Keyword (Ancillary Keyword)

The <Keyword> field allows authors to provide any words or phrases needed to further describe the service.

Keyword>text up to 160 characters</Keyword>

  • The <Keyword> field may contain up to 160 characters from the UTF-8 character set.
  • The <Keyword> field is recommended and may be repeated.
  • Ancillary keywords that are not found in the controlled keyword lists may be provided.

<Keyword>Hierarchical Data Format</Keyword>
<Keyword>Document Type Definition</Keyword>
<Keyword>Web Map Service</Keyword>
<Keyword>Layer Metadata</Keyword>
<Keyword>ship track</Keyword>
<Keyword>environmental parameters</Keyword>


This document should be cited as:
Service Entry Resource Format (SERF) Writer's Guide, 2018.
Global Change Master Directory.
National Aeronautics and Space Administration.



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