Programming Guide : Working with Arrays, Table Fields, and Collections : Arrays and Table Fields--Conceptual Background : How You Can Reference Table Fields
 
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How You Can Reference Table Fields
Throughout this chapter, references to arrayname and tablefield_name in the syntax are synonymous. Both refer to the array itself, because the table field and its associated array (ArrayObject) are identically named.
To refer to the TableField object, use the field function with the table field's name. The syntax is:
field(tablefield_name)
For more information about the field function, see How You Can Reference Objects.