If you want to ad a clickable link ie for a website or youtube address then hit reply, at the top of the box will be a number of pictures, one about 3/4 to the right is a symbol of a globe with chains under it.
FIRST you need to go to the page you want to link, then copy the web address in the bar at the top (cntrl c) then go to the 4wd trip site and click that picture of the globe with chains, in the URL area click in there and paste the web address you copied from the earlier page.
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