Deck-enclosing option

This crossword clue is for the definition: Deck-enclosing option.
it’s A 21 letters crossword puzzle definition.
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Possible Answers: SCREEN.

Last seen on: LA Times Crossword 19 May 19, Sunday

Random information on the term “SCREEN”:

IBMBIO.COM is a system file in many DOS operating systems. It contains the system initialization code and all built-in device drivers. It also loads the DOS kernel (IBMDOS.COM) and optional pre-loadable system components (like for disk compression or security), displays boot menus, processes configuration files (like CONFIG.SYS) and launches the shell (like COMMAND.COM).


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The file is part of IBM’s PC DOS (all versions) as well as of DR DOS 5.0 and higher (with the exception of DR-DOS 7.06). It serves the same purpose as the file IO.SYS in MS-DOS, or DRBIOS.SYS in DR DOS 3.31 to 3.41. (For compatibility purposes with some DOS applications the IBMBIO.COM file name was briefly also used by the IBM version of OS/2 1.0, where it resembled the OS2BIO.COM file as used by Microsoft.)

The file is located in the root directory of the bootable FAT-formatted drive/partition (typically C:\) and typically has the system, hidden, and (since DOS 2.0 also the) read-only file attributes set. Under DR-DOS the file may be optionally password-protected as well.[nb 1] Under PC DOS, the system attribute is set in order to mark the file as non-movable, a restriction technically not necessary under DR-DOS. As IBMBIO.COM is a binary image containing executable code rather than a true COM-style program, the hidden attribute is set to keep the file from being accidentally invoked at the command prompt, which would lead to a crash. This is no longer necessary for DR-DOS 7.02 and higher, because under these systems the file is a fat binary also containing a tiny COM-style stub just displaying some version info and exiting gracefully when not being loaded by a boot sector.

SCREEN on Wikipedia