I used to be RJP but owing to a series of mishaps arising out of vandalism suffered by my then internet service provider, I have lost access to the name. Since this happened I have put most of my internet energy into my web site. But there, I frequently use Wikipedia to provide explanatory links. Sometimes, it is easier to make a small addition to this than to write out a whole story independently for my site. When doing that, it is more courteous if I log myself in. So here I am.