Sometimes, after you have made a post, you may want to edit it. It might have a simple typo which you want to correct, or you may have made an error of fact. How can you edit a post once you have sent it ?
First, go to the post concerned. Look in the top right corner of it and you will see the word "Options". Just hold your mouse-pointer over that for a second, and a menu will drop-down. Move your mouse-pointer down to the first option, which is "Edit Message", and left-click on it.
Your post will open for you, in a text-entry box identical to the one you used to type it in the first place. Go ahead and make your changes.
When you have finished, you can click on the "Preview" button to see how your edited post looks and, if you are happy with it, click on "Post" under the bottom right corner. If you change your mind and decide to leave the original post as it was, click on "Cancel" instead, and the original post will be left untouched.
Note that whenever you edit a post, the date and time of your edit will be added to the top of the message so that people can see it was edited.
One thing to avoid: If you are thinking about editing a post you have made, do check first whether any following posters have already referred to it, or even quoted it. If they have, you should make very sure that any changes you make do not in anyway change the value, or meaning, of their comments.