Two mistypes in manual for ZSU: page 25 title hIdraulical instead of hYdraulical page 35 get into automatic angle tracking, by clicking with the LEFT mouse button - should be RIGHT
I will correct it.
Hpasp Free SAM Simulator, "Realistic to the Switch" (U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.) http://sites.google.com/site/samsimulator1972/home