Rebol3 Code Examplex

Rebol [
    title: "Rosetta code: Unicode variable names"
    file:  %Unicode_variable_names.r3
    url:   https://rosettacode.org/wiki/Unicode_variable_names
]

;; Set a variable with a name including the 'Δ', (delta character), to 1
Δ: 1
;; Increment it
++ Δ
;; Print its value.
?? Δ

Δ: 2