I can’t make out all of it, but it seems to be some kind of extended warning (I’m seeing 2 characters which imply law), rather than just an order. Probably the guy who made it didn’t know enough English to write a full warning out.
.
Efficiency? Lol, Japanese is the most laconic language ever. You could go days, months, years in Japan without hearing a pronoun. You could have entire conversations with only verbs. In fact, English is the only language I know of where pronouns are always required.

@mgear: Take a into-level linguistics class, it’s really awesome. There’s actually a lot of sounds English speakers can’t hear. For example, there are *ten* distinct sounds in most East Indian languages that we only hear as ‘t, d, p, b’, and a few of those languages have even more sounds which we couldn’t distinguish. Likewise, What English speakers only hear as ‘sh’ and ‘ch’ corresponds to about six different sounds in Mandarin. Some languages even have plosives, which you couldn’t pick up if you wanted to, unless you lived in those places for years.
.
My first language is Portuguese, and some dialects in North Portugal have extra sounds that effect the meaning of words which I can’t even distinguish. Most Canadians can’t hear the difference when Brits pronounce ‘caught’ and ‘cot’.