dotCompost wrote:
Please tell me how do I edit a mispelling in one of my posts

You are posting through gardenbanter, yes?
Gardenbanter may look like a web site forum, but it is merely
repackaging usenet postings that most of us access by other means. In
usenet messages are propagated round hundreds of servers in parallel,
so the original posting does not really exist, just diverse copies of
it . There is a mechanism for cancelling posts, but you can't do it
from gardenbanter and it rarely works effectively from other systems.

You could have a look at a nettiquette guide - some groups expect
people to follow-up a mistaken posting with a correction. But in this
one, just let it lie.