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 backup headers
 BIOS Parameter Block
 Batch Control Block
 BIOS Data Area
 memory map
 boot sector
 Box Drawing Chars
 code pages
 colors
 color table
 country codes
 country info
 disk partition table
 device attributes
 device command codes
 device header
 device request headr
 device status
 directory format
 Disk Base Table
 Disk Transfer Area (DTA)
 DOS error codes
 DOS versions
 drive parameter tbl
 disk parameter table
 DPB
 DPT
 drive status data
 disk status data
 diskette status data
 EXE file header
 .EXE
 EBDA
 extended BIOS
 FAT
 File Allocation Table
 FCB
 File Control Block
 file attributes
 file handles
 default handles
 handles
 float formats
 floating point
 real numbers
 floppy formats
 disk formats
 ID bytes
 machine identificatn
 KB flags
 keyboard flags
 make codes
 break codes
 GDT
 Global Descriptor Table
 media descriptor byte
 Memory Control Block
 MCB
 Program Segment Prefix
 PSP
 scan codes
 SFT
 file table
 System File Table
 system descriptor
 video information
 video tables
 video pages
 XFCB
 Extended FCB
 extended file ctlblk