2.2.2.5 Mem Tokens

Mem tokens have two purposes: they cache the results of reference class (section 2.2.2.2.2) expressions and they can return the results of reference class expressions as value class (section 2.2.2.2.1) expressions. Mem tokens act on binary-reference-expressions (section 2.5.98.88) that follow them in a mem-area-expression (section 2.5.98.88).