Accordions on a page can work as one,thus the accordion can be extended to any number of positions by copying the module. Alternatively accordions can be given separate IDs so that they function independently. Also it takes its styling cues for the title from your site so it should match your other items nicely. (Or use module suffix option to create an alternative)
No need to register,
If you are dealing with lots of data or save frequently, you have been warned.
If you click the little blue HTML button you will find your code. Some other editors have similar functions. Perhaps the button could be bigger but the editor is not part of the module but of Joomla.
If you don't like this kind of editor because you prefer to enter code rather use the the standard input go to the Global Configurations in Joomlas site menu and then select either no editor or codemirror.
Thank you very much for your excellent support and easy to use extension.