I have resolved the above issue.
When inserting a comment there exists some custom text adjacent to the input boxes,
I aim to have different text depending on whether the content input box is Plain Text or CKEditor entry. I can write some code except that I'm unsure how to identify the type of input box in use.
e.g.
if input box is Plain Text then
display this text
else (if it is CKeditor)
display that text
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