What Tex says about the icons is correct as far as I can tell.
We've also introduced a non-standard "moved" symbol, which is an arrow pointing the right, because the standard "moved" symbol was far too similar to the other ones.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"Whether I were to preach in brief, Sāriputta, or whether I were to preach in detail, Sāriputta, or whether I were to preach both in brief or in detail, Sāriputta, rare are those who understand." (A I 333, Sāriputtasutta)