{"head":"833d4c3e45f1be2e13a8eba85904c67039c551a1","size":1,"push_id":44175309,"shas":[["833d4c3e45f1be2e13a8eba85904c67039c551a1","bae5fddfe5c93f339bb3e86a2d00205cd00bd8e0@gmail.com","Tutorial docs up to example P01/08-system updated.","Pavel Solin"]],"ref":"refs/heads/master"}