Array.joinwith()
By use of this command, each element from an original array is joined with the element specified in the argument. The new element is joined in-between the start and end of original array.
Examples
1.
a=1,3,4,3,5,7,9; a.joinwith(["join"])
-->Displays output as 1 join 3 join 4 join 3 join 5 join 7 join 9
2.
a=MS(3); a.joinwith(["$$$"])
-->Displays output as 2$$7$$6$$9$$5$$1$$4$$3$$8