/* Tactic: config4*/
\tbegin
\ttactic config4() \def
(\tlaw Sequence_Associativity() \parallelbox \tlaw Sequence_Associativity())
\tsemi \tlaw Parallel_Composition_Sequence_step() \tsemi
(\tskip \semibox (\ttactic isolateOutComm() \tsemi
(\tskip \semibox (\tlaw Par_Interleave()))))
\tend