Here's an example 1. write a sed script that strips out html-tags from arbitrary, well-formed HTML. It's pretty hard to fail to notice that 5 people used the

Here's an example 1. write a sed script that strips out html-tags from arbitrary, well-formed HTML. It's pretty hard to fail to notice that 5 people used the one-liner from http://www-h.eng.cam.ac.uk/help/tpl/unix/sed.html http://www-h.eng.cam.ac.uk/help/tpl/unix/sed.html, but can't explain what the hold-space is. Also hard to hide the fact that you used the hold space!