[Oberon] Functional programming style for Oberon?

[eas lab]

]For Oberon section 6.6.1 in the green book sums up everything there
is to learn to be able to do
]functional programming in Oberon.

My oberon/docu/Chapter6.Text goes up to:
6.5.3   Oberon System 3 for Linu...

Please give URL of <green book>

== TIA.