* Creates a PDF viewer with a scripting interface. This is basically 1) an
* iframe which is navigated to the PDF viewer extension and 2) a scripting
* interface which provides access to various features of the viewer for use
- * by print preview and accessbility.
+ * by print preview and accessibility.
* @param {string} src the source URL of the PDF to load initially.
* @return {HTMLIFrameElement} the iframe element containing the PDF viewer.
*/