Help:Pipe

This is a disambiguation page for two undocumented terms here on MediaWiki where many now come first to look for old Meta Help pages. This term and topic seems to give null search results, so here's a quick timesaver for where to get explanation & details...
 * pipe trick
 * w:Help:Magic
 * w:Wikipedia:Tip_of_the_day/May_2,_2006 - clear user instructional
 * w:Help:Pipe_trick
 * pipe link
 * w:Help:Piped_link - the mysterious piped link, a term I hadn't heard nor recall seeing in 10 years contributing on nine WikiMedia projects. (To my chagrin, this was what I called a pipe trick! Ooops!)