| 摘要 |
The method allows a user to define groups of entities that will be queried automatically for Presence information by his wireless information device. The user, once he has selected the group to be queried, need do no more than select at one time a 'Pinging' function using an on-screen dialog or other menu, which initiates the automatic querying. There is no need to manually query each member of the group for its Presence information.
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