We have Tutorials
for many things that are already explained in the documentation from using pack/unpack to command line arguments. The point is that not all people immediately understand this information and they need it presented to them in a different way. Perhaps I am thinking more of a beginner's guide to precedence. It seems that for a lot of people who's first language is Perl - they come to expect the Do What I Mean (DWIM) approach. I often get WTF comments in #perl when I am explaining an answer by stating that "...binds more tightly than...".
Or perhaps - I am just misjudging the need.