The DELIM specifier indicates what characters (if any) are used to delimit character constants in list-directed and namelist output. It takes the following form:
| 'APOSTROPHE' | Indicates apostrophes delimit character constants. All internal apostrophes are doubled. | 
| 'QUOTE' | Indicates quotation marks delimit character constants. All internal quotation marks are doubled. | 
| 'NONE' | Indicates character constants have no delimiters. No internal apostrophes or quotation marks are doubled. | 
The default is 'NONE'.
The DELIM specifier is only allowed for files connected for formatted data transfer; it is ignored during input.