observer模块
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A GUI tool for observing an Erlang system.

描述::

    Observer is a graphical tool for observing the characteristics of Erlang systems. 
    The tool Observer displays 
        system information, 
        application supervisor trees, 
        process information, 
        ETS tables, 
        Mnesia tables, 
        contains a front end for Erlang tracing with module ttb.

启动::

    %% Starts the Observer GUI.
    observer:start().

    %% To stop the tool, close the window.