pad

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Pad
x$s

pad pads a string with spaces on one side to a specific length, based on an integer x.

Positive integers pad on the right, and negative integers pad on the left.

Padding is fully atomic, and special cased to treat strings as atoms. 

  10$"abc"
"abc       "

  (3;4;(5;6))$("xy";"za";("bc";"cd"))
("xy "
 "za  "
 ("bc   "
  "cd    "))
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