View source for Format Widget enhancements as a JavaScript object literal

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* Start with a { and end with a }
* Wrap string values in quotes
* Escape quotes within string values with a \ (e.g. \" or \')
* Escape newlines within string values using an HTML <‍br‍>
* Separate properties and sub-properties by commas

 <nowiki>{
   strProperty: "string value",
   numProperty: 42,
   boolProperty: true,
   nullProperty: null,
   arrayProperty: [["one", 1], ["two", 2]],
   functionProperty: function(){ doStuff; },
   objectProperty: { subStrProperty: "line one <br> line two" }
}</nowiki>
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