I'm setting up a WordPress site for a client. They need to be able to hide individual words through the WYSIWYG editor, which will be revealed upon a click.
I've set up a new custom style format in functions.php, to apply a span class around the highlighted word.
However, when you highlight a word in the WYSIWYG editor and apply the format, the span wraps around the whole html within the nearest block: the whole paragraph or list item, for example.
How can I get a style format to apply to an individual word, as the Italics or Bold buttons do?