1.1 Glossary

This document uses the following terms:

code page: An ordered set of characters of a specific script in which a numerical index (code-point value) is associated with each character. Code pages are a means of providing support for character sets and keyboard layouts used in different countries. Devices such as the display and keyboard can be configured to use a specific code page and to switch from one code page (such as the United States) to another (such as Portugal) at the user's request.

conversation: A single representation of a send/response series of email messages. A conversation appears in the Inbox as one unit and allows the user to view and read the series of related email messages in a single effort.

conversation ID: A unique value that is associated with a conversation. It is assigned to each Message object that is part of a conversation and it is used to identify the conversation to which the message belongs.

conversation index: A value that specifies the location of a message within a conversation. A client can use this value to identify the parent and child messages of a message, and then generate a tree view of the conversation that contains those messages.

Inbox folder: A special folder that is the default location for Message objects received by a user or resource.

non-delivery report: A report message that is generated and sent by a server to the sender of a message if an email message could not be received by an intended recipient.

Outbox folder: A special folder that contains Message objects that are submitted to be sent.

Sent Items folder: A special folder that is the default location for storing copies of Message objects after they are submitted or sent.

Short Message Service (SMS): A communications protocol that is designed for sending text messages between mobile phones.

Wireless Application Protocol (WAP) Binary XML (WBXML): A compact binary representation of XML that is designed to reduce the transmission size of XML documents over narrowband communication channels.

XML: The Extensible Markup Language, as described in [XML1.0].

XML namespace: A collection of names that is used to identify elements, types, and attributes in XML documents identified in a URI reference [RFC3986]. A combination of XML namespace and local name allows XML documents to use elements, types, and attributes that have the same names but come from different sources. For more information, see [XMLNS-2ED].

XML schema: A description of a type of XML document that is typically expressed in terms of constraints on the structure and content of documents of that type, in addition to the basic syntax constraints that are imposed by XML itself. An XML schema provides a view of a document type at a relatively high level of abstraction.

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.

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