XML Well-Formedness Details for HTML Documents

When opening an HTML document in Author mode, if it is not XML well-formed, you will see a warning message at the top of the editor explaining that once you make a modification, the document will be automatically converted to proper XML structure. Examples of things that are automatically converted include:

Missing end tags are added to applicable elements.
Empty tags are closed.
Missing quote characters are added to applicable attributes.
Entity references that are allowed in the HTML5 specification are converted to the corresponding character.

Tip: It is also possible to manually convert HTML documents to be XML well-formed. There are two ways to do this, depending on whether you want to convert a single document or batch convert multiple documents at once:

Single Document - To convert a single HTML document, right-click anywhere in the currently open HTML document (in the main editor) and select HTML to XML Well-formed.
Multiple Documents - To batch convert multiple HTML documents at once, go to the Project Explorer view, select the documents you want to convert, then right-click and select HTML to XML Well-formed.
Notes:
- All selected HTML files are backed up before being processed (same path/name but with the ".bak" extension added at the end).
- Any detected conversion errors are grouped and listed in a dedicated tab in the Results pane at the bottom of the application.
- A brief report is displayed at the end of the operation.