Spreadsheet
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To enter a formula, navigate to a cell, press backspace, and then type your formula, e.g.
=SUM(A5:A12)
To subscribe to some topic, enter a formula
=SUBSCRIBE("io.crossbar.demo.sliders.123456.master")
To publish to some topic, enter a formula
=PUBLISH("io.crossbar.demo.gauges.g1", A3)
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