<wob_jonas> perl -e {$f="wisdom/rules of wisdom";open$i,"<",$f or die;local$/;$s=<$i>;$s=~s/with no space at the end/and end in a newline with no space before that/ or die;$s=~s/\\n\\z// or die;print$s;open$o,">",$f;print$o $s or die;}

String diagrams would be useful in category theory, except they're unreadable due to being curled up in tiny dimensions. Taneb invented them anyhow.