/* NetRexx */
sampleStr = 'ha' -- string to duplicate
say '   COPIES:' sampleStr.copies(5)
say 'CHANGESTR:' '.....'.changestr('.', sampleStr)

sampleChr = '*' -- character to duplicate
say '     LEFT:' sampleChr.left(5, sampleChr)
say '    RIGHT:' sampleChr.right(5, sampleChr)
say '   CENTRE:' sampleChr.centre(5, sampleChr)
say '  OVERLAY:' sampleChr.overlay(sampleChr, 1, 5, sampleChr)
say '   SUBSTR:' ''.substr(1, 5, sampleChr)
say 'TRANSLATE:' '.....'.translate(sampleChr, '.')