RosettaCodeData/Task/Array-concatenation/IDL/array-concatenation-1.idl

 > a = [1,2,3]
 > b = [4,5,6]
 > help,a
      A               INT       = Array[3]
 > help,b
      B               INT       = Array[3]
 > print,a
      1       2       3
 > print,b
      4       5       6