Thankyou for pointing out editing Catlin.
Of course editing is a right but I have recently and will in future mark all the posts I have needed to edit for content and rather than changing the content add corrections to the end or post a corrective or explanatory follow up.
I don't believe I have edited posts for content if it affects the meaning of subsequent posts. I mostly just edit for grammatical errors.
I sometimes need to clarify a post to get my meaning across
I don't copy and save others posts as I believe this is unecessary and the posts are their work and I do not feel I have this right