lsb = left square bracket (no spaces)
rsb = right square bracket (no spaces)
highlighting and clicking the link icon does the same thing as
lsb url="http://www.duckduckgo.com" rsb duck duck go lsb /url rsb
http://www.duckduckgo is the web address of the site I'm linking to, and "duck duck go" is what is visible.
looks a little strange, but if I type in the actual characters the forum would interpret the characters and you wouldn't see how it's done.