Plain links. First escaped bare URLs http://cnn.com/x.html and ftp://pub.admc.com.
Now live bare URLs with trailing punctuation that should not be linked: http://cnn.com/x.html? and ftp://pub.admc.com. And then rela~ tive.html link and labelled \\ ~ rel link (notice that markup not formatted in link or URL). Finally http://abso~ lute./x.html link and labelled \\ ~ abs. link.

Images. image and labelled \\ ~ rel image (notice that markup not formatted in link or URL). ...and image and alted \\ ~ abs. image.
Finally, the linked alted \\ ~ abs. image.

And then there are labelled, unlabelled {LABEL for: wiki|li:nk}, and {LABEL for: null|intra} links.