I am looking at an Austrian brochure on 40mm grenade rounds and have some questions on the markings of several rounds. One is the Nr. 112 high explosive marked "HE/S". What does the "S" stand for? Thought it might be self-destruct but other rounds are clearly marked "SD". Another is the Nr. 92 lg. red phosphorous smoke/incendiary which is marked "RP II lg." What does the II (actually a Roman numeral two) and the lg. stand for? The last is a loading with a gray body and a light brown or gold nose (can't tell for sure which it is) that is marked "BS-SD". The SD is no problem, but the BS is not identified. I also realize it is not filled with bull s***, that filling is left to our politicians. The illustrations are not the best so posting photos of them would not help much.