Approved Extension for Asynchronous I/O

	or ASYNCHRONOUS
	or ID = scalar-default-int-variable or ASYNCHRONOUS

• If either an ASYNCHRONOUS or an ID= specifier is present, then both shall be present.
• If an ASYNCHRONOUS specifier is present, the REC= specifier shall appear, a format shall not appear, and a namelist-group-name shall not appear.
• If an ASYNCHRONOUS specifier is present, then no function reference may appear in an expression anywhere in the data transfer statement.

or ID = scalar-default-int-variable or PENDING = scalar-default-logical-variable

• The ID= and PENDING= specifiers shall not appear in an INQUIRE statement if the FILE= specifier is present.
• If either an ID= specifier or a PENDING= specifier is present, then both shall be present.

 
• The WAIT Statement