Initial data commit

Task/Collections/NetRexx/collections.netrexx

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+/* NetRexx */
+options replace format comments java crossref symbols nobinary
+
+myVals = [ 'zero', 'one', 'two', 'three', 'four', 'five' ]
+mySet = Set
+mySet = HashSet()
+
+loop val over myVals
+  mySet.add(val)
+  end val
+
+loop val over mySet
+  say val
+  end val
+
+return