/* NetRexx */
options replace format comments java crossref symbols nobinary

upperΔ = 1
Δupper = upperΔ
lowerδ = 2
δlower = lowerδ

say upperΔ '+' Δupper '= \-'
upperΔ = upperΔ + Δupper
say upperΔ

say lowerδ '+' δlower '= \-'
lowerδ = lowerδ + δlower
say lowerδ
say

-- Unicode works with the NetRexx built-in functions
Υππερ = '\u0391'.sequence('\u03a1') || '\u03a3'.sequence('\u03a9') -- ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ
Λοωερ = '\u03b1'.sequence('\u03c1') || '\u03c3'.sequence('\u03c9') -- αβγδεζηθικλμνξοπρστυφχψω
say Υππερ'.Lower =' Υππερ.lower()
say Λοωερ'.Upper =' Λοωερ.upper()
say

-- Note: Even with unicode characters NetRexx variables are case-insensitive
numeric digits 12
δ = 20.0
π = Math.PI
θ = Π * Δ
σ = Θ ** 2 / (Π * 4) -- == Π * (Δ / 2) ** 2
say 'Π =' π', diameter =' δ', circumference =' Θ', area =' Σ

return