- newfunction(:concat, :type => :rvalue, :doc => <<-EOS
-Appends the contents of multiple arrays into array 1.
+ newfunction(:concat, :type => :rvalue, :doc => <<-DOC
+ Appends the contents of multiple arrays into array 1.
+
+ *Example:*
+
+ concat(['1','2','3'],['4','5','6'],['7','8','9'])