Don't about the russian software, but for any high-speed PCB design the trace layout matters and 90-degrees bends are to be avoided. On motherboards you'll often see lines that have an extra squiggle or two to equalise the length (and thus delay) because they happened to have a shorter distance to cover.
Mostly 90-degree bends are avoided (in preference to two 45-degree bends) because it makes the routing easier or because it looks better to the person doing the layout. If you are operating with high-enough speed signals that a 90-degree bend is a problem you are also avoiding layer changes and many other things like the plague.
Interestingly, I contend that the prevelance of 45 degree angles is in large part due to the capabilities of ECAD software. If you look at old manually-routed PCBs, 45 degree bends are rare. If you try to make a design with non-45 degree bends in most ECAD software, prepare for pain as much of the features of the layout engine fail to work properly (I had experience of this after being inspired by some images of TopoR-designed boards).
Romania was the only country where the leader (dictator) didn't step down when he was asked to by Moscow.
The leader was also obsessed that Romania would be invaded by Russia, like Czech was in 1968, so he had specialized guerilla army units to fight back. This can explain why the army was fighting itself, and why it took so long for the shooting to stop.
None of eastern bloc leaders was "asked to by Moscow" to step down - or do you have any sources for that claim?
Gorbachev merely assured everyone that USSR won't intervene like it did in 1956 or 1968, that everyone is on their own. He also encouraged (not enforced) reforms "perestroika" and transparency "glasnost".
> Visiting Berlin in early October, Gorbachev cautioned the East German leadership of the need to reform, and confided in his advisors that East German leader Erich Honecker had to be replaced. Two weeks later, Honecker was forced to resign, while hundreds of thousands marched in protest throughout major East German cities
Nowhere I could find he was directly forced to resign by Moscow. Some sources say it was Stasi, others that it was his own party because of general political situation (there was mass exodus to West Germany underway).
I am from Czechoslovakia, communists there similarly refused any reforms but I don't know of any initiative from Moscow to replace them.
I'm from Romania, there was a lot of talk that Gorbachev asked Ceausescu to resign, and offered him asylum in Russia, but I can't find a source for that.
But look here, a soviet source says that Moscow would have intervened militarily to prevent Ceausescu's return:
> “This victory will be a hundred times more valuable if it is won by the Romanian people themselves,” a senior Soviet official said. “We would definitely act to prevent Ceausescu’s return--by now, that has been made clear to all--but the victory belongs to the Romanian people and must be protected and developed by them. In this, they can count on our firmest support, but let the actions be theirs.”
> In reality, it may have been a carefully planned coup aided by the Soviet Union -- Mikhail Gorbachev's way of eliminating the troublesome despot Nicolae Ceausescu.
> Through our sources cultivated in Bucharest and access to highly classified Central Intelligence Agency reports, we have learned that Moscow had a much more direct hand than previously revealed in the creation of the ruling Romanian party to replace the Ceausescu government, the National Salvation Front.
It's quite possible that USSR made overthrowing Ceausescu more probable (by clandestine negotiations rather), because after all in spite of being fellow socialists, Romanian regime had unfriendly relations with Kremlin in 80s. It however doesn't support the idea about Gorbi asking anybody to step down.
What was that russian electronic board design software where nothing is vertically/horizontally aligned, no trace is straight?