Control Mechanisms for Array Grammars on Cayley Grids.- A Pleasant Stroll Through the Land of Distributed Machines, Computation, and Universality.- Sequential Grammars with Activation and Blocking of Rules.- The Language (and Series) of Hammersley-type Processes.- Minimizing Rules and Nonterminals in Semi-conditional Grammars: Non-trivial for the Simple Case.- Minimal Useful Size of Counters for (Real-Time) Multicounter Automata.- A Framework for (De)composing with Boolean Automata Networks.- An Extension of Interval-valued Computing Equivalent to Red-green Turing Machines.- Physical Computation and First-Order Logic.