Originally it was ПП-БЭСМ, «программирующая программа».
Ershov's archive: http://ershov-arc.iis.nsk.su/archive/eaindex.asp?lang=1&gid=...
Ershov's archive: http://ershov-arc.iis.nsk.su/archive/eaindex.asp?lang=1&gid=...
(b) speaking of Ershov — anyone know what became of Рапира? It looks like a nice little language, and presumably many of the same ideas floating around the IFIP that inspired it also eventually led to Python (by way of ABC).