Depending on the specified mode, either inserts or deletes the specified window from the client's save-set. The specified window must have been created by some other client, or a error results.
can generate and errors.
The function adds the specified window to the client's save-set. The specified window must have been created by some other client, or a error results.
can generate and errors.
The function removes the specified window from the client's save-set. The specified window must have been created by some other client, or a error results.
can generate and errors.