Post formatting

Is it possible, when reading posts, that a button be added to expose the formatting codes inline? After a post has been edited correctly, it might help the original poster to really see which tags they should have used when originally posting. For example, if both "file" and "port" tag are displayed in green font, the reader might not know which tag was used. Just wondering if that might help flatten the learning curve.. In fact, as I write this I don't see a button for the "port" tag. Thanks
 
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