A roster is composed of zero or more roster items (<item/> elements), which contain the Jabber ID and optional nickname of a user, as well as an indication whether the current user sends presence to that user, receives presence from that user, or both. (This is also known as the subscription status.) Each roster item may also belong to one or more groups, which are indicated by <group/> elements underneath the <item/> element.
A Jabber client queries or sets its roster by using an Info/Query message with the jabber:iq:roster namespace.
Ros"ter (?), n. [Perhaps a corruption of register; or cf. roll.] Mil.
A register or roll showing the order in which officers, enlisted men, companies, or regiments are called on to serve.
© Webster 1913.
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