Remarks chapter 2

[Rengervn]

Hi

Small remark on Sectoon 2.5.1:
The sentence "This property is sometimes described as reference semantics because when you modify an environment all existing bindings to that environment continue to have the same reference." is unclear to me. I don't understand the meaning and reasoning (the "because") in this sentence. Perhaps this could be written more clearly.

Cheers
Renger