I have tried a dozen different ideas to add a checkbox to a richtext field.
The text is rendered as a static "[" "]". I have tried many combinations of syntax.
I can edit the work item and use the Wysiwyg editor by typing [] or using the tool bar.
BUT
I have a use case that can use automation to speed up a very manual task,
based on values in other fields, I want to add check boxes to a specific field.