Today I went relief teaching in a local primary school. This piece of paper was blue tacked onto the whiteboard in the staff room. The paper had its genesis as a result of an altercation the previous day. A child had slapped another child during class time when a relieving teacher had been in the room. The child was sent to the Principal. The child was given a piece of paper by the Principal who said - " Your behaviour in front of relievers needs to improve!! I have written down here on this paper exactly what you must not do in future!! Now write me a page of lines!!
That's exactly what the obedient child did. He wrote a page of lines - and personally I can't fault them. There has been no attempt to avoid the punishment. Every horizontal line on the page is filled with little vertical lines.They are reasonably straight lines, well spaced and legible. One could not mistake them for anything other than..... well....... lines.
Meaning is implicit as well as explicit. Sometimes it pays to be very explicit indeed.