There's a 10 character minimum on ECF. Some Pictures, like the Smileys, will post by themselves, because the link to them is longer than 10 characters. If you wanted only the word "no" to post, you'd have to do it something like this . . .
No.........
Highlight that with your mouse, starting with the "N," and you'll see there are eight dots (periods) that have been made White. You do that with the "A" button. You highlight them, and select the color White.
SJ,
To post a picture, you use the button that looks like a Picture, next to the button that looks like Film (which is used to insert a YouTube Video).