## setUncheckedSymbol(characterCode, fontName) {#number_string} Sets the symbol used to represent the unchecked state of a check box content control. ```js setUncheckedSymbol(characterCode: number,......```js let doc = new aw.Document(); let builder = new aw.DocumentBuilder(doc);...DocumentBuilder(doc); let sdtCheckBox = new aw.Markup.StructuredDocumentTa(doc...