“…Furthermore, another operator called encapsulation, depicted by ∂ H (), is necessary to carry out model specification, as it allows internal communications through a particular channel, given by c Ω,x −→x ,Ω (d) out of a sending action by an item Ω at the initial end of that channel, stated as x, such as s Ω,x (d) and a reading action by an item Ω at the final end of that channel, spotted as x , such as r Ω ,x (d), which get both cancelled at that stage, so just the communication action prevails. Additionally, an extra operator named abstraction, exhibited by τ I (), is needed to undertake model verification, as it permits internal actions and internal communications to be masked, whilst not affecting the external actions, hence unveiling the external behaviour of the model [61].…”