Register Cross Reference Record

Field	Size	Description
Register number	XL1	The register number (X'0' to X'F')
Register Type	CL1	G—General
	XL2	Reserved
Total references	FL4	The total number of references to the register for the assembly
Number of references	FL4	The number of references to the register in this record The groups of two reference fields below occur n times depending on the value in this field. The reference groups are contiguous so they might be treated as an array.
Offset of references	FL4	The offset from the beginning of this record to the first group of reference fields. A value of binary zeros indicates that there are no references.
		Start of reference groups, one group per reference. The ellipses (...) indicate the fields are grouped.
...Statement Number	FL4	The statement number on which the register is referenced
...Reference Flag	CL1	`C' '` No branch or modification `C'M'` Modification `C'B'` Branched to `C'U'` USING statement `C'D'` DROP statement `C'N'` Index register
		End of reference groups.
Note: Where the number of references exceeds the record size for the associated data file, the record is continued on the next record. The continuation flag is set in the common header section of the record. The current number of references (for that record) is stored in the record and the record written to the associated data file. The next record contains the subsequent references. The count of the number of references is a count for the current record. Fields that have been written are not repeated in the next record. Fixed-length fields are initialized to binary zeros or spaces, and variable-length fields have a length of binary zeros.