Functions: Node Set 
Functions with “*” are extended functions for the Electronic File Manager: Format Definition add-on.
Parameters suffixed with a question mark “?” have a default value and can be omitted.
id(object)
Description: Selects elements by their unique ID.
Sample:
<?xml version = 1.0”?>
<Text>
<Persons>
<Person>A</Person>
<Person>B</Person>
<Person>C</Person>
</Persons>
</Text>
id(“A”) would be <Person a =”A"></Person>.
*node-concat(node-set, string spaceMark?)
Description:
Returns a string concat value of node-set with argument 2 as separator
Default value of argument 2 is a space
Sample:
<?xml version = 1.0”?>
<Text>
<Persons>
<Person>A</Person>
<Person>B</Person>
<Person>C</Person>
</Persons>
</Text>
Suppose the reference number of node set Persons is PersonRef. node-concat(%PersonRef, ”, “) returns “A,B,C”.