Deferred element length record

A deferred-length ("LEN") record can be used to supply the true length of an element whose length was not known at the time the External Symbol Dictionary (ESD) record was issued. The format of a LEN record is as follows; a LEN record cannot be continued.

Table 1. Deferred section-length record
Field	Offset	Type	Description
PTV	0-2	Byte(3)	Type of record (X'033000')
	3-5	Byte(3)	Reserved.
Length	6-7	Binary(2)	The length of the deferred-length data items that follow. This length cannot be zero.
Element-Length Data	8-*	Byte(n)	Up to `n` bytes of element-length data. (See Table 1.)
Trailer		Byte(m)	Unused space at the end of a record is reserved, and cannot be used for any other purpose.

The format of each 12-byte Deferred Element Length Data Element is as follows:

Table 2. Deferred element-length data item
Field	Offset	Type	Description
ESDID	0-3	Binary(4)	ESDID of the element for which this length value is supplied.
	4-7	Binary(4)	Reserved.
Length	8-11	Binary(4)	Length of the element.

A deferred element length data item cannot be split across records.