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Update switch/change help text to reflect updates
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</script>
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<script type="text/x-red" data-help-name="switch">
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<p>A simple function node to route messages based on its properties.</p>
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<p>A node to route messages based on property values.</p>
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<p>When a message arrives, the selected property is evaluated against each
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of the defined rules. The message is then sent to the output of <i>all</i>
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rules that pass.</p>
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</script>
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<script type="text/x-red" data-help-name="change">
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<p>Set, change or delete properties of a message.</p>
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<p>The node can specify multiple rules that will be applied to the message in turn.</p>
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<p>Set, change or delete properties of a message, flow context or global context.</p>
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<p>The node can specify multiple rules that will be applied in turn.</p>
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<p>The available operations are:</p>
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<ul>
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<li><b>Set</b> - set a property. The <b>to</b> property can either be a string value, or reference
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another message property by name, for example: <code>msg.topic</code>.</li>
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<li><b>Set</b> - set a property. The value can be a variety of different types, or
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can be taken from an existing message or context property.</li>
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<li><b>Change</b> - search & replace parts of the property. If regular expressions
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are enabled, the <b>replace with</b> property can include capture groups, for example <code>$1</code></li>
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<li><b>Delete</b> - delete a property.</li>
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