Data attached to the beginning of an electronic file that describes or controls the actions that apply to the following data, such as rotation, mirroring, data type, and compression.
Area appended to and preceding user data containing addressing, format, and other information.
The information that comes at the beginning of a frame or a packet before the message text. It often includes control and addressing information.
The first five bytes of an ATM cell, containing information on flow control, virtual path and channel, payload type, cell urgency, and a header-only checksum.
Information included at the top of an email message that identifies the message's author, the recipient and lots of other technical details. The full header is normally hidden from view.
The first part of an email message that contains controlling and meta-data such as the subject, origin and destination email addresses, the path an email takes, and it priority. May be used to filter, track spammers or uncover information about delivery rates.
Control information placed before data when encapsulating that data for network transmission. Compare with trailer. See also PCI.
the beginning part of a data packet or frame that identifies the information unit's source, its destination, and its size.
A section located at the top of any message which identifies the sender, reciever and the subject of the message.
The first tape segment where the tape format information resides, such as tape name, date, time and bad sector map.
In data packet communications, a specified number of bytes that precedes the actual data being transmitted. It identifies control information used to deliver, route, and process the data contents of a packet.
The top portion of a received email message, containing information about the routing of the message. (See " Email Headers")
The element of an ITT that provides information about all Lanes.
in SECS-I, a 10-byte data element used by the message and transaction protocols. NOTE-The header is contained in each block of a message. The operation of all communications functions above the block transfer protocol is linked to information in the header.
Key data for a data set or file that enables user software to interpret and process data correctly. In relation to a file, the header provides such information as number of pages, date and time and the size of the file. For the processor, the header is particularly important in relation to programs, as it contains information that specifies the programs in the RAM.
Information attached to the first frame of a message. It carries information to the receiving device about the message itself, the message's destination, and routing information.
refers to the first part of a data cell or packet, containing such information as source and destination addresses, and instructions on how the telecommunications network is to handle the data. The header is part of the overhead in a data transmission protocol. For typical TCP/IP transmissions (most Internet traffic), the header is usually 40 bytes of each packet (20-byte TCP and 20-byte IP headers). Note TCP and IP headers can be larger than 20 bytes if "options" are enabled. ICMP headers (as in pings) are 28 bytes. UDP headers are 8 bytes. HFC
Carries control information that precedes user data in a data frame or packet.
One of the two required parts of a mail message, containing the required RFC 822 style header lines From:, Date:, and at least one recipient header line, such as To:, Cc:, Bcc:.
Part of Packet which contains control information
The beginning part of an email message or Usenet posting. Usually contains "From," To," and "Subject" lines among others. See also: Body
The initial part of a mail message, containing more or less meta information about the message; who sent it, what it is about, what it looks like, to whom you are to answer, etc. The structure and meaning is described in RFC* 822.
Container Basic header for this instance describing information about the source. While the "header" element is not required nor are any of its childen, it is recommended that it be included with a "dataDateTime" indicating the creation time of the instance document.
In DICOM an image, which is the standard medical image, has an associated DICOM header. This contains information pertaining to the image e.g. patient name or image information such as the size of the image. The header contains the information that allows the computer to exchange information related to the image with other devices and perform tasks on the data. A header is also used in networking and is attached to each unit of data sent across the network, the size of header being dependant on the network protocol being used. The header holds information about the data which allows the computer to combine all the data units after transmission to form the file sent across the network.
appears as the first part of a data packet, and contains addressing and error-checking information. The word is also used to refer to the part of an e-mail message before the body of text. TO: Santa FROM: Mrs. Claus SUBJECT: I quit
In electronic filing, a HEADER identifies the basic information required to precede each electronic submission and documents sent via EDGAR. For example, a "submission header" provides identifying information about the filing, such as form type, filing entity, and fee; a "document header" precedes each document in an electronic submission and identifies the document.
(for full details, see in-band header) Some memory managers allocate a fixed amount more than is necessary for each block and use it to store information such as the size of the block or a tag. This extra memory is known as an in-band header or a frame
The initial portion of a message, which contains any information and control codes that are not part of the text (e.g., routine, priority, message type, destination addressee, and time of origination).
The row of information that describes each column in a list.
The header is the part of a file containing information about it. The header of an email, for instance, lists sender, recipient and subject.
The part of the audio files that defines the data within the file so the computer knows what to do with it. The information contained includes such components as file type, compression format, playing time, number of channels, sampling rate, and sample size.
The part of an e-mail message, or Usenet posting, that contains information about the message. Examples include: who it's from and when the message was sent.
Portion of a message that contains information used to guide the message to the correct destination.
A collection of lines containing routing, categorization, and authorship information about a post. The header may contain a variety of elements but Netscancollects only the email address and user name, the organization, message subject, the message's unique identification number, a list of all the messages this message references, the date and time zone, the number of lines, a list of the newsgroups the message is cross-posted to, and the followups, xrefs, xheader, and newsreader lines.
Control information added at the data source to allow data to reach its destination. At the destination, layers corresponding to those at the source that created the header read and remove it, so that only the data reaches the final destination.
In Internet email, the initial part of a message, consisting of a series of lines that describe the message. Each header-line starts with a label such as From: or Subject: to identify its meaning. The header is followed by a blank line, and then the body of the message.
An e-mail header shows the route that a particular piece of e-mail took to get from sender to recipient. When you report spam, it's important to include the full header -- without it, it's impossible to tell where it came from.
Many files contain information at the beginning which describes the files contents, provides documentation, etc. called a header. This is especially true for files that contain data. Similar information at the end of a file is called a trailer.
This is the first byte sent in a data packet, which the computer uses to synchronize itself with the data coming in. [Section 6.3.4
At the top of all e-mails, you'll find several pieces of information: where the e-mail comes from, the time and date sent, and the subject. All this is called "the header". If you receive an unsolicited e-mail message and wish to report it, you need to include all the information contained in the header.
Binary signaling and address information, added to the front of a data packet. Instructs network components how and where to send the packet.
Part of every email or Usenet post, it comes before the message and contains, amongst other things, the message writer, date and time. Headers are not normally visible when reading emails or newsgroup articles.
Unit fitted above an Automatic Entrance Door, which contains the door operator and control system. For a Sliding Automatic Entrance Doorset, the header also contains the sliding track and is therefore the full width of the door travel.
In Internet terms, part of an HTTP request or response that carries information about the request, the response or its content.
The information at the top of an E-mail message that's visible when replying or forwarding the message. The header contains information about the sender and route of the message.
The part of an e-mail that can be found at the top of an e-mail. It contains the IP addresses of who sent the e-mail and who it is destined for.
The top of an email or newsgroup message that lets you know where the message came from and when it was posted.
The gobbledegook at the top of an E-Mail message that's automatically generated by your E-Mail program. It tells you when the message was sent, to whom, by whom, and which path it took through the net.
Beginning of e-mail message containing to and from information, date, subject, etc.
Generally, the top part of an email message or Usenet posting that contains information about the message, such as who it's from, when it was sent, etc.
the portion of a post that contains the subject line among other information such as date, news server, and unique post ID. NewsBin downloads and displays the subject portion of the header to represent a post. The complete post is not downloaded unless NewsBin is told to do so. The terms header and subject are sometimes used interchangeably even though the subject is really just a portion of the header.
The five bytes in an ATM cell that supply addressing and control information, including generic flow control, virtual path identifier, virtual circuit identifier, payload type, and cell loss priority.
A file that contains the required declarations and definitions for using part of the C++ Standard Library (see also header file).
Information embedded in a message that includes sender, date and time received, recipient, and subject. trimMail Inbox performs hundreds of tests on each message header before declaring a message OK.
Information at the beginning of an email. Message headers contain the addresses of sender and recipients, the subject of the message and the date and time the message was received.
At the beginning of all email messages there is a line of text called a 'header' that contains information such as the subject of the message and the email address of the person who sent the message.
In many disciplines of computer science, a header is a unit of information that precedes a data object. In a network transmission, a header is part of the data packet and contains transparent information about the file or the transmission. In file management, a header is a region at the beginning of each file where bookkeeping information is kept. The file header may contain the date the file was created, the date it was last updated, and the file's size. The header can be accessed only by the operating system or by specialized programs.
The large text that will appear on your forum page. Example: 'Welcome to Pablo's Lizard Message Board!'
The portion of a packet, preceding the actual data, containing source and destination addresses, error checking and other fields. A header is also the part of an electronic message message that precedes the body of a message and contains information about the message originator and time stamp.
part of an email message that precedes the body of the message and provides the message originator, date and time
1. the first lines of a page in a word processing document. 2. the top portion of an email message containing the address of the sender, recipient and the subject of the message. 3. the top portion of a Web page containing the title.
Part of a frame that typically identifies the contents, origin, and destination of the data.
A load computer code that appears at the beginning of an Internet file. Email headers (normally hidden by your email client) shows the path a message has taken from its point of origin to its destination.
System-defined control information that precedes user data.
Routing and program data at the start of an email message, including the sender's name and email address, originating email server IP address, recipient IP address and any transfers in the process.
The control information added to the beginning of a transmitted message. This may consist of packet or block address, destination, message number and routing instructions.
The first part of a received e-mail message which contains information about the routing of the message while traversing the Internet. Much of this may not be displayed if the e-mail software program keeps it hidden (usually an option).
file header is the header block for the file. A record header is the header for a tagged data block. There are two types of record headers: short and long. Short tags are used for blocks with 62 bytes of data or less and large tags can be used for any size block. See the Container Format section for details on the header structure.
A header is also the part of an e-mail or an information packet that precedes the actual message. Headers often contain the message originator, date, and time.
Information that appears at the top of e-mail messages, and newsgroup articles that contains data about the sender and the message. The date and time the message was created, the computer path through which the message travelled and other information.
file: files containing class definitions, function prototypes, global data and other information of general interest to a program.
The necessary information in a packet that is needed for the protocol stack to process the packet.
Located at the top of a PO or invoice and contains information needed to acquire or pay for library items as well as to search for a PO or invoice in future sessions.
Part of a mail packet that shows the source, destination and route. The 'envelope' of your message.
(HEAD): Ch. 2 Defines the header information for a document, such as the TITLE (required) and any other header elements.
Control information added before data when encapsulating the data for network transmission.
The portion of an email message that precedes the body of the message. Headers contain information useful to email programs and users trying to make sense of the message: they tell whom the message is for, who sent it, when it was sent, and what it is about. Headers must be written strictly according to the SMTP protocol so that email programs can read them.
Most messages transmitted in the internet consist of a header and a body. A header usually contains protocol information and meta information about the payload transmitted in the body.
Special information contained in the beginning of a frame.
Part of a newsgroup article or e-mail message that contains information needed by the computers that handled it. Hard-to-read but informative,the message ID, date, and time.
Either: The bit at the top of mail messages that tells you who, where, where its from. Or: A part of a web page which is hidden from normal view, and holds the page title, META information, etc. Hits Every time I look at a file on your website, that file has received a hit. If I look at seven different files, your website has received seven hits. If I look at your home page and then your enquiry page, each page has received one hit. Hit Counter Displays the number of hits made on a particular page, with a reasonable degree of accuracy - So a hit counter on the home page will only display the number of hits made on that home page.
The part of an email message that is usually not displayed in the email client. The email header contains meta-data and routing information such as the identity and IP addresses of the sender and recipient as well as all email gateways in between the sender and the recipient and the email's priority and subject line. Some spammers deliberately manipulate the header information in an attempt to fool (or spoof) spam filters as to the actual source of the email message.
(1) In an email message, the part that precedes the body of a message and contains, among other things, the message originator, date and time. (2) On a packet switched network, the portion of a package, preceding the actual data, containing source and destination addresses, and error checking and other fields.
The portion of a packet, preceding the actual data, containing information such as source and destination addresses. A header is also the part of an electronic mail message that precedes the body of a message. See also: Electronic Mail.
A portion of an e-mail message containing information pertinent to the transmission of the message such as the address of the sender, the address of the recipient, and when the message was sent.
The specific segment that tells the receiving computer where an individual EDI message starts.
The part of the email message that describes where itâ€™s from, where itâ€™s going, who itâ€™s being sent from, etc. Generally, most of the header is hidden by the email client.
The initial portion of a network packet or e-mail message. The header contains any information and control codes that are not part of the message itself (such as routine or priority status, message type, destination, sender and time of origination).
In Mailer, the basic information about an electronic mail message as it appears in the mailer container. A message header displays the name of the sender, subject, the date and time it was received, and message size.
A block of information that precedes and identifies the data that follows, such as a block of bytes in communications, a file on a disk, a set of records in a database, or an executable program. When used for email, headers identify the message sender and the routing.
A separate board above the rest of a sign that gives it a headline or contains a different advertising message for the same product. Most often seen with point-of-purchase advertising.
the first line in your mailing list that contains the column names.
The part the message that provides information of the origin of the email, for example, the name, email address and date/time the message was sent.
Contains technical and general information of the email message (the body contains the message itself).
Control information at the beginning of a message, segment, datagram, packet or block of data.
Routing and program data at the start of an e-mail message.
The section of an email message that contains information used by the mail servers and mail readers to determine the origination and destination of a message, what attachments are included, what format the message is in, the subject of the message, where replies should be addressed to and more.
The initial part of a data packet or frame containing identifying information such as the source of the data, its destination, and length.
Portion of the e-mail message that includes message sender, recipients, subject line, attachments.
The first part of a received email message which contains information about the routing of the message while traversing the Internet. Usually not be displayed because the email software program keeps it hidden.
The portion of a packet that precedes the actual data and contains control information such as source and destination address and error checking.
In the OfficeVision program, one or more lines of text that prints at the top of a document. For example, the header could be the subject of the document, the date, the page number, an outline heading, or the document ID. Contrast with footer. In disk management, the 8-byte portion of the 520-byte disk sector used by the operating system for control and access information. See include statement. The portion of a message that contains control information such as one or more destination fields, the name of the originating station, and the priority level for the message.
Data that comes in front of a data packet, containing address and handling information for that packet.
The first part of a packet describing its content and processing options
A standard header containing the RCS file name, the revision number, date, author and state. This is frequently embedded in a text string so that object files can be correctly identified. For example: #ifndef lint static char RCSid = "$Header:$"; #endif It is surrounded with the #ifdef lint ... #endif because lint would complain about an unused variable RCSid and about RCSid being multiply defined. The variable is static so it will be unique to this object file and not available to any others. Upon being expanded it looks like: static char RCSid = "$Header: test.c,v 1.2 87/2/4 09:39:07 pete Exp $"; This incorporates all the other information that keywords give except for the log message.
The part of an e-mail message that precedes the message. It contains information such as the originator, recipient, and subject of the message.
identifying information contained within the properties of an image; see also â€œmetadata
A commented section of code at the beginning of a procedure, usually placed before the Sub or Function statement. The header describes the purpose of the procedure, specifies all variables declared within it, and can contain information identifying the developer(s) who wrote it.
Information at the begining of list messages containing things such as nameplate, masthead, copyright info, table of contents, and so on, sometimes inserted automatically by the list server. E-mail headers. What an email message uses to communicate with mail servers, usually invisible to most email programs.
The part of the â†’ HTTP request and response that is sent before the actual content, and that contains meta-information describing the content.
The portion of a packet, preceding the actual data, containing source and destination addresses, and error checking and other fields. A header is also the part of an e-mail message that precedes the body of a message and contains, among other things, the message originator, date, and time. WWWebfx Home Page
The portion of the message that precedes the actual body and trailer of the business transaction.
The portion of a packet, preceding the actual data, containing source and destination addresses and error-checking fields. The word can also be used to describe the part of an electronic mail message (or USENET news article) that precedes the body, although one usually talks about headers (plural) in that case.
The top part of an e-mail message that contains information about who, where, when it was sent.
In E-mail terms, this is the part of the message indicating who the sender is and some other brief details, such as the subject of the message.
Address information on packets that says where it should go.
The part of an Email message or newsgroup posting that contains information about the message (who it is from, who it is to, when it was sent, etc.)
This is the top half of the email or newsgroup message that shows where the message came from and when it was posted.
A single line summary description of a newsgroup article or e-mail message. Headers beginning with Re: often denote a response to a previous article or message. After scanning the headers in the alt.politics newsgroup, Sandy was discouraged by the number of "spams" - useless articles of new relevance to the bulletin board.
The portion of an e-mail message or a network newsgroup posting that precedes the body of the message; it contains information like who the message is from, its subject, and the date. A header also is the portion of a packet that proceeds the actual data and contains additional information the receiver will need.
The Header of an article contains information about the sender, the subject, and the newsgroup of the article.
Titles displayed across the top of a database table that describe the content of each data field. First record in a data file that contains identifying information and instructions that apply to all other components of the file or data set it contains. In image files, a header stores information about format and/or registration coordinates.
a block of data written at the beginning of cartridges or files that contains specific identification information
Data stored at the beginning of a file or other unit of memory to provide information about it. Headers usually contain information for use by the system and, therefore, are not easily accessible.
The initial portion of a message or file, which contains statistic and control information.
Information about an e-mail message (also see body)
Information added by the protocol in front of the payload in the packet for its own use (addresses, packet type, sequence number, CRC...). Each protocol adds a different header, so in a typical TCP/IP packet as transmitted, we have a MAC header, an IP header and a TCP header, followed by the payload.
The part of an email message or Usenet posting that contains information about the message, such as who it's from, when it was sent, and so on. Headers are mainly interesting when something doesn't work.
A series of bytes at the beginning of a communication packet that provides information about the packet such as its computer of origin, the intended recipient, packet size, and destination port number. The header of a packet is like the envelope of a traditionally-mailed letter, in that it conveys "return address" and "intended recipient" information but is not the real content of the message.
That part of a message, at the beginning, which contains destination, address, source address, message numbering, and possible other information. It helps direct the message along its journey.
Protocol control information located at the beginning of a protocol data unit.
Container for information about the person being described in a résum
The portion of a packet, preceding the actual data, containingsource and destination addresses, and error checking and otherfields. A header is also the part of an electronic mail messagethat precedes the body of a message and contains, among otherthings, the message originator, date and time. See also:Electronic Mail, packet. Header Record
The first part of a packet, frame, or cell preceding the message data and trailer; the header carries special information used by the network to the destination station. For example, in ATM networks, cell header information pertains to ATM layer functionality, mainly the identification of cells by means of a label. The header in an ATM cell is made up of 5 bytes of information.
The leading part of a data message. HTTP messages are sent with an HTTP header preceding the actual communicated data.
The portion of a packet which contains the source and destination addresses, error checking, and other information. A header is also the part of an e-mail message that precedes the body of the message and contains, among other things, the message originator, date and time, and subject lines.
In information technology, Header refers to supplemental data placed at the beginning of a block of data being stored or transmitted, which contain information for the handling of the data block.