It should probably be noted that you can do a lot of that stuff automatically using the visual editor box for replies and new posts.
For example I just block marked this sentence and hit the “B” button to get bold. (Ctrl-B works, too.)
And the “I” button here to get italics. (Ctrl-I works, too). And there’s
STRIKE THROUGH there.
And center justification
and right justification ….
And if you use the “kitchen sink” button on the right you get more buttons, like colorful fonts and underline.
Even big headings.
Who needs codes? 🙂