How do I edit a post in 2+2?

[SpleenLSD]

I have seen that others can edit posts but I can't find a button on my Home, preferences or posts that allows for this. I see in the FAQ that there's an icon for editing a post, but I've never seen it present in my posts. Any ideas?

[XChamp]

You can only edit up to a few minutes after your original post. After that, you can no longer edit.