The IWatchListControl type exposes the following members.
Adds symbols to the specified folder (used by the RightEdge data import tool)
Gets all the symbols in the watchlist
Gets a list of folders that symbols can be added to (for the RightEdge data import tool)
Gets the currently selected (or checked) symbols in the watchlist
Removes (deletes) the currently selected symbols from the watchlist
Selects items in the watchlist by name. Used when the "/W" command-line option is specified
Shows the watchlist's wizard (if any) for creating a new folder and adding symbols to it