⍝ Lower-casification:

    lcase 2 7⍴'PLEASE WHISPER'
please 
whisper

    lcase 4↓⎕av
 	⌶ɫ%'⍺⍵_abcdefghijklmnopqrstuvwxyz¯.⍬0123456789⊢¥$£¢∆abcdefghijklmnopqrstuvwxyzý·⍙ÁÂÃÇÈÊËÌÍÎÏÐÒÓÔÕÙÚÛÝþãìðòõ{€}⊣⌷¨àäåæ⍨éñöøüßàáâäåæçèéêëíîïñ[/⌿\⍀<≤=≥>≠∨∧-+÷×?∊⍴~↑↓⍳○*⌈⌊∇∘(⊂⊃∩∪⊥⊤|;,⍱⍲⍒⍋⍉⌽⊖⍟⌹!⍕⍎⍫⍪≡≢óôöø"#&´┘┐┌└┼─├┤┴┬│@ùúû^ü`∣¶:⍷¿¡⋄←→⍝)] §⎕⍞⍣

    ⎕ucs lcase ⎕ucs 65 9056 66      ⍝ [8692] 'A<variant>B' → 'a<variant>b'
97 9056 98

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