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      <p class="shortcomment cmt">observe the associated signal or event
This has slightly different semantics with Signals and Events:</p><div class="fullcomment"><div class="comment cmt"><p>observe the associated signal or event
This has slightly different semantics with Signals and Events:</p><h4> Usage as Signal </h4><p>When used on a a signal, the function f is triggered whenever the signal changes its