| a b | a := EtWorkspace new. b := EtWorkspace new. (Array with: a with: b with: a) snoop
Note that a marker =S appears next to the at: 1 and at: 3 line. This indicates that the values in those lines are identical to the global variable S. In particular, they are the same an EtWorkspace.
Also note that no =S marker appears on at: 2. This indicates that its value is a different an EtWorkspace.
Note that an =S marker appears next to the at: 2 line, but not the at: 1 and at: 3 lines.