Once the file id is known you can calculate its Virtual Block Number(VBN) in 
the index file.  The formula is as follows:

	FN + 2 + n = Virtual Block # in the index file

	where	FN is the File Number portion of the file id
		2  is the offset for the boot and home blocks
		n  is the number of blocks in the index file bit map
		   this value is stored in the home block at offset 
		   H.IBSZ (= 0). DMP the home block (VBN 2 of the 
		   index file) to get n

	The following is a step by step procedure for dumping a file
	header via the VBN of the index file 

STEP 1 - GET THE FILE NUMBER FOR THE FROM THE FILE ID

	 from fndfil: DB1:[001,006]DJAN28.LST;1 FID=(1032,52) CREATED ...
						     ^^^^
	     or 

	>PIP DB1:[1,6]DJAN28.LST;1/FU

	DJAN28.LST;1	(1032,52)	300./300.	28-JAN-25 ...
			 ^^^^
			 

STEP 2 - DUMP THE HOME BLOCK AND GET INDEX FILE BITMAP SIZE

	>DMP TI:=DB1:[0,0]INDEXF.SYS/BL:2:2

Dump of DB1:[0,0]INDEXF.SYS;1 - File ID 1,1,0
		 Virtual Block 0,000002 - Size 512. bytes

000000    000003 000001 047613 024507 .......
	  ^^^^^^
	 (H.IBSZ)	


STEP 3 - USE VBN FORMULA

	FN + 2 + n = Virtual Block # in the index file
	
      1032 + 2 + 3 = 1037 VBN IN INDEX FILE

STEP 4 - DUMP THAT BLOCK

	>DMP TI:=DB1:[0,0]INDEXF.SYS/BL:1037:1037