The DELIM specifier asks how character constants are delimited in list-directed and namelist output. It takes the following form:
| 'APOSTROPHE' | If apostrophes are used to delimit character constants in list-directed and namelist output |
| 'QUOTE' | If quotation marks are used to delimit character constants in list-directed and namelist output |
| 'NONE' | If no delimiters are used |
| 'UNDEFINED' | If the file is not connected, or is not connected for formatted data transfer |