Combines a list of values to yield a single string of values, with each value optionally separated by a delimiter.
The join tag always yields a string of text, containing the result of concatenating the elements of its default field togehter. If the delim field is specified, the value of that field is used as a separator between elements in the result.
The join tag does not create an object in the document tree.
If an identifier is assigned to the join tag, a scalar object with that name will be created to store the result.
<var:vector 1,10,true,{Hey!}> <! define a vector object named vec with mixed data elements !> <putLn <join var>> <! sends {110trueHey!} back to the running program as program input !> <putLn <join var delim={ and }> <!sends: {1 and 10 and true and Hey!} back to the running program !>