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H
H
Hat
HCF
HD
HDM
Hex
HF
HLL
Hog
HOL
Hop
HSM
HUS
Hz
Header
  • In e-mail, one of two main parts of an e-mail message. Contains a number of searchable fields, including To: and From:; the part of a message that comes before the data field.
  • The portion of a message that contains information that will guide the message to the correct destination. Note: This information contains such things as the sender's and receiver's addresses, precedence level, routing instructions, and synchronization pulses. See also address field, overhead information.
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