Document revision date: 19 July 1999

Output Strings from Zero-Filled Numeric Conversion

Directives for zero-filled numeric conversion convert an integer (specified as an argument for the directive) to decimal, octal, or hexadecimal notation. The ASCII representation of the integer is inserted into the control string. Default output field lengths for the converted argument are determined as follows.

Directives that convert arguments to octal notation return 3 digits for byte conversion, 6 digits for word conversion, and 11 digits for longword conversion. Numbers are right-justified and zero-filled on the left. Explicit-length fields longer than the default are blank-filled on the left. Explicit-length fields shorter than the default are truncated on the left.

Directives that convert arguments to hexadecimal notation return 2 digits for byte conversion, 4 digits for word conversion, and 8 digits for longword conversion. Numbers are right-justified and zero-filled on the left. Explicit-length fields longer than the default are blank-filled on the left. Explicit-length fields shorter than the default are truncated on the left.

Directives that convert arguments to decimal notation return the required number of characters for the decimal number. Explicit-length fields longer than the default are zero-filled on the left. If an explicit-length field is shorter than the number of characters required for the decimal number, the output field is completely filled with asterisks (*).

For byte conversion, only the low-order 8 bits of the binary representation of the argument are used. For word conversion, only the low-order 16 bits of the binary representation of the argument are used. For longword conversion, the entire 32-bit binary representation of the argument is used.

Output Strings from Blank-Filled Numeric Conversion

Directives for blank-filled numeric conversion convert an integer (specified as an argument for the directive) to decimal notation. These directives can convert the integer as a signed or unsigned number. The ASCII representation of the integer is inserted into the control string.

Output field lengths for the converted argument default to the required number of characters. Values shorter than explicit-length fields are right-justified and blank-filled; values longer than explicit-length fields cause the field to be filled with asterisks.

For byte conversion, only the low-order 8 bits of the binary representation of the argument are used. For word conversion, only the low-order 16 bits of the binary representation of the argument are used. For longword conversion, the entire 32-bit binary representation of the argument is used.

Output Strings from Special Formatting Directives

The !n%C and !%E directives insert an ASCII string (based on the value of the most recently evaluated argument) into the output string. These directives are useful for inserting irregular plural nouns and verbs.

If the most recently evaluated argument equals n, the text between one directive and the next is inserted into the output string. If the most recently evaluated argument does not equal n, the next !n%C directive is processed.

If n must be a negative number, you must specify it as an argument and use the number sign (#).

You can specify the !n%C and !%E directives with repeat counts. If you specify repeat counts, the text between one directive and the next is copied to the output string the specified number of times.

The %F directive marks the end of a plurals statement.

Examples

$ COUNT = 57 
$ REPORT = F$FAO("NUMBER OF FORMS = !SL",COUNT) 
$ SHOW SYMBOL REPORT 
  REPORT = "NUMBER OF FORMS = 57" 
      

In this command procedure, the FAO directive !SL is used in a control string to convert the number equated to the symbol COUNT to a character string. The converted string is inserted into the control string.

Note that COUNT is assigned an integer value of 57. The F$FAO function returns the ASCII string, "NUMBER OF FORMS = 57", and assigns the string to the symbol REPORT.

$ A = "ERR" 
$ B = "IS" 
$ C = "HUM" 
$ D = "AN" 
$ PHRASE = F$FAO("TO !3(AS)",A,B,C+D) 
$ SHOW SYMBOL PHRASE 
$ PHRASE = "TO ERRISHUMAN" 
      

In this command procedure, the !AS directive is used to insert the values assigned to the symbols A, B, C, and D into the control string.

Because the specified repeat count for the !AS directive is 3, F$FAO looks for three arguments. The arguments in this example include the symbol A ("ERR"), the symbol B ("IS"), and the expression C+D ("HUMAN"). Note that the values of these string arguments are concatenated to form the string "ERRISHUMAN".

$ A = "ERR"                                          
$ B = "IS" 
$ C = "HUMAN" 
$ PHRASE = F$FAO("TO !#(#AS)",3,6,A,B,C)               
$ SHOW SYMBOL PHRASE 
$ PHRASE = "TO ERR   IS    HUMAN " 
      

In this command procedure, the F$FAO function is used with the !AS directive to format a character string. The first number sign (#) represents the repeat count given by the first argument, 3. The second number sign represents the field size given by the second argument, 6. The next three arguments (A,B,C) provide the strings that are placed into the control string each time the !AS directive is repeated.

Each argument string is output to a field having a length of 6 characters. Because each string is less than 6 characters, each field is left-justified and padded with blank spaces. The resulting string is assigned to the symbol PHRASE.

$ OFFSPRING = 1 
$ REPORT = F$FAO- 
("There !0UL!1%Cis!%Eare!%F !-!UL !-!0UL!1%Cchild!%Echildren!%F here",1) 
$ SHOW SYMBOL REPORT 
$ REPORT ="There is 1 child here" 
 
      

In this command procedure, the !0UL directive evaluates the argument OFFSPRING but does not insert the value in the output string. The !n%C directive inserts the character string "is" into the output string because its value and the value of the argument OFFSPRING match. The directives !-!UL evaluate the argument a second time so that the correct character string can be inserted in the proper place in the output string. The !%F directive marks the end of each plurals statement. The F$FAO function returns the ASCII string "There is 1 child here" and assigns the string to the symbol REPORT.

Returns attribute information for a specified file.

Format

F$FILE_ATTRIBUTES (filespec,item)

Return Value

Arguments

filespec

Specifies the name of the file about which you are requesting information. You must specify the file name as a character string expression.

You can specify only one file name. Wildcard characters are not allowed.

item

Indicates which attribute of the file is to be returned. The item argument must be specified as a character string expression, and can be any one of the OpenVMS RMS field names listed in Table DCLI-5.

Description

Use the F$FILE_ATTRIBUTES lexical function in DCL assignment statements and expressions to return file attribute information. Table DCLI-5 lists the items you can specify with the F$FILE_ATTRIBUTES function, the information returned, and the data type of this information.

Table DCLI-5 F$FILE_ATTRIBUTES Items

Item	Return Type	Information Returned
AI	String	TRUE if after-image (AI) journaling is enabled; FALSE if disabled
ALQ	Integer	Allocation quantity
BDT	String	Backup date/time
BI	String	TRUE if before-image (BI) journaling is enabled; FALSE if disabled
BKS	Integer	Bucket size
BLS	Integer	Block size
CBT	String	TRUE if contiguous-best-try; otherwise FALSE
CDT	String	Creation date/time
CTG	String	TRUE if contiguous; otherwise FALSE
DEQ	Integer	Default extension quantity
DID	String	Directory ID string
DIRECTORY	String	Returns TRUE or FALSE. Returns TRUE if it is a directory.
DVI	String	Device name string
EDT	String	Expiration date/time
EOF	Integer	Number of blocks used
ERASE	String	TRUE if a file's contents are erased before a file is deleted; otherwise FALSE
FFB	Integer	First free byte
FID	String	File ID string
FILE_LENGTH_HINT	String	Record count and data byte count in the form ( n,m), where n is the record count and m is the data byte count. An invalidated count is specified by a -1 for n or m.
FSZ	Integer	Fixed control area size
GBC	Integer	Global buffer count
GRP	Integer	Owner group number
JOURNAL_FILE	String	TRUE if the file is a journal; otherwise FALSE
KNOWN	String	Known file; returns TRUE or FALSE to indicate whether file is installed with the Install utility (INSTALL). However, returns NOSUCHFILE if a file does not exist (for example, the file has been installed but subsequently deleted).
LOCKED	String	TRUE if a file is deaccessed-locked; otherwise FALSE
LRL	Integer	Longest record length
MBM	Integer	Owner member number
MOVE	String	TRUE if movefile operations are enabled; otherwise FALSE
MRN	Integer	Maximum record number
MRS	Integer	Maximum record size
NOA	Integer	Number of areas
NOBACKUP	String	FALSE if the file is marked for backup; TRUE if the file is marked NOBACKUP
NOK	Integer	Number of keys
ONLINE	String	TRUE if the file is online; otherwise FALSE
ORG	String	File organization; returns SEQ, REL, IDX
PRESHELVED (Alpha only)	String	TRUE if the file is preshelved; otherwise FALSE
PRO	String	File protection string
PVN	Integer	Prolog version number
RAT	String	Record attributes; returns CR, PRN, FTN, ""
RCK	String	TRUE if read check; otherwise FALSE
RDT	String	Revision date/time
RFM	String	Record format string; returns the values VAR, FIX, VFC, UDF, STM, STMLF, STMCR
RU	String	TRUE if recovery unit (RU) journaling is enabled; returns TRUE or FALSE
RVN	Integer	Revision number
SHELVABLE	String	TRUE if the file is shelvable; otherwise FALSE
SHELVED	String	TRUE if the file is shelved; otherwise FALSE
STORED_SEMANTICS	String	ASCII string that represents stored semantics
UIC	String	Owner user identification code (UIC) string
VERLIMIT	Integer	Version limit number. The value 32767 indicates that no version limit was set.
WCK	String	TRUE if write check; otherwise FALSE

File attributes are stored in the file header, which is created from information in OpenVMS RMS control blocks. For more information on OpenVMS RMS control blocks, refer to the OpenVMS Record Management Services Reference Manual.

Examples

$ FILE_ORG = F$FILE_ATTRIBUTES("QUEST.DAT","ORG")
$ SHOW SYMBOL FILE_ORG
  FILE_ORG = "SEQ"
      

This example uses the F$FILE_ATTRIBUTES function to assign the value of the file organization type to the symbol FILE_ORG. The F$FILE_ATTRIBUTES function returns the character string SEQ to show that QUEST.DAT is a sequential file.

The QUEST.DAT and ORG arguments for the F$FILE_ATTRIBUTES function are string literals and must be enclosed in quotation marks (" ") when used in expressions.

$ RFM = F$FILE_ATTRIBUTES("KANSAS::USE$:[CARS]SALES.CMD","RFM")
$ SHOW SYMBOL RFM
  RFM = "VAR"
      

This example uses the F$FILE_ATTRIBUTES function to return information about a file on a remote node. The function returns the record format string VAR, indicating that records are variable length.

Returns a specified item of information for a specified device.

Format

F$GETDVI (device-name,item)

Return Value

Arguments

device-name

Specifies a physical device name or a logical name equated to a physical device name. Specify the device name as a character string expression.

After the device-name argument is evaluated, the F$GETDVI function examines the first character of the name. If the first character is an underscore (_), the name is considered a physical device name. Otherwise, a single level of logical name translation is performed and the equivalence name, if any, is used.

item

Specifies the type of device information to be returned. The item argument must be specified as a character string expression and can be any one of the items listed in Table DCLI-6.

Description

The F$GETDVI lexical function invokes the $GETDVI system service to return a specified item of information for a specified device. You can obtain a list of devices on your current system by using the lexical function F$DEVICE. Unless otherwise stated in the description of the item argument, F$GETDVI returns device information about the local node only.

This lexical function allows a process to obtain information for a device to which the process has not necessarily assigned a channel.

The F$GETDVI function returns information on all items that can be specified with the $GETDVI system service. In addition to the items that the $GETDVI system service allows, the F$GETDVI function allows you to specify the item EXISTS.

Table DCLI-6 lists the items you can specify with the F$GETDVI function, the type of information returned, and the data types of the return values. In addition to the return information listed in Table DCLI-6, the F$GETDVI lexical function returns any error messages generated by the system service $GETDVI. Table DCLI-7 lists the values returned by the DEVCLASS item. Table DCLI-8 lists the values returned by the DEVTYPE item. For more information on the $GETDVI system service and the items you can specify, refer to the OpenVMS System Services Reference Manual.

Table DCLI-6 F$GETDVI Items

Item	Return Type	Information Returned1
ACPPID	String	Ancillary control process (ACP) identification.
ACPTYPE	String	ACP type code, as one of the following strings: F11V1, F11V2, F11V3, F11V4, F11V5, F64, HBS, JNL, MTA, NET, REM, UCX, or ILLEGAL. The ACPTYPE item returns ILLEGAL if: The device is not mounted or is mounted using the /FOREIGN qualifier. The ACPTYPE is not currently defined.
ALL	String	TRUE or FALSE to indicate whether the device is allocated.
ALLDEVNAM	String	Allocation class device name.
ALLOCLASS	Longword integer between 0 and 255	Allocation class of the host.
ALT_HOST_AVAIL	String	TRUE or FALSE to indicate whether the host serving the alternate path is available.
ALT_HOST_NAME	String	Name of the host serving the alternate path.
ALT_HOST_TYPE	String	Hardware type of the host serving the alternate path.
AVL	String	TRUE or FALSE to indicate whether the device is available for use.
CCL	String	TRUE or FALSE to indicate whether the device is a carriage control device.
CLUSTER	Integer	Volume cluster size.
CONCEALED	String	TRUE or FALSE to indicate whether the logical device name translates to a concealed device.
CYLINDERS	Integer	Number of cylinders on the volume (disks only).
DEVBUFSIZ	Integer	Device buffer size.
DEVCHAR	Integer	Device characteristics.
DEVCHAR2	Integer	Additional device characteristics.
DEVCLASS	Integer	Device class. (See Table DCLI-7 for a list of the values returned.)
DEVDEPEND	Integer	Device-dependent information.
DEVDEPEND2	Integer	Additional device-dependent information.
DEVLOCKNAM	String	A unique lock name for the device.
DEVNAM	String	Device name.
DEVSTS	Integer	Device-dependent status information.
DEVTYPE	Integer	Device type. (See Table DCLI-8 for a list of the values returned.)
DEVICE_TYPE_NAME	String	Device type name.
DFS_ACCESS	String	TRUE or FALSE to indicate whether the device is a virtual disk connected to a remote Distributed File System (DFS) server.
DIR	String	TRUE or FALSE to indicate whether the device is directory structured.
DMT	String	TRUE or FALSE to indicate whether the device is marked for dismount.
DUA	String	TRUE or FALSE to indicate whether the device is a generic device.
ELG	String	TRUE or FALSE to indicate whether the device has error logging enabled.
ERRCNT	Integer	Error count.
EXISTS	String	TRUE or FALSE to indicate whether the device exists on the system.
FOD	String	TRUE or FALSE to indicate whether the device is a files-oriented device.
FOR	String	TRUE or FALSE to indicate whether the device is mounted using the /FOREIGN qualifier.
FREEBLOCKS	Integer	Number of free blocks on the volume (disks only).
FULLDEVNAM	String	Fully qualified device name.
GEN	String	TRUE or FALSE to indicate whether the device is a generic device.
HOST_AVAIL	String	TRUE or FALSE to indicate whether the host serving the primary path is available.
HOST_COUNT	Integer	Number of hosts that make the device available to other nodes in the OpenVMS Cluster.
HOST_NAME	String	Name of the host serving the primary path.
HOST_TYPE	String	Hardware type of the host serving the primary path.
IDV	String	TRUE or FALSE to indicate whether the device is capable of providing input.
LOCKID	Integer	Clusterwide lock identification.
LOGVOLNAM	String	Logical volume name.
MAXBLOCK	Integer	Number of logical blocks on the volume.
MAXFILES	Integer	Maximum number of files on the volume (disks only).
MBX	String	TRUE or FALSE to indicate whether the device is a mailbox.
MEDIA_ID	String	Nondecoded media ID.
MEDIA_NAME	String	Either the name of the disk or the tape type.
MEDIA_TYPE	String	Device name prefix.
MNT	String	TRUE or FALSE to indicate whether the device is mounted.
MOUNTCNT	Integer	Mount count.
NET	String	TRUE or FALSE to indicate whether the device is a network device.
NEXTDEVNAM	String	Device name of the next volume in a volume set (disks only).
ODV	String	TRUE or FALSE to indicate whether the device is capable of providing output.
OPCNT	Integer	Operation count.
OPR	String	TRUE or FALSE to indicate whether the device is an operator.
OWNUIC	String	User identification code (UIC) of the device owner.
PID	String	Process identification number of the device owner.
RCK	String	TRUE or FALSE to indicate whether the device has read checking enabled.
RCT	String	TRUE or FALSE to indicate whether the disk contains RCT.
REC	String	TRUE or FALSE to indicate whether the device is record oriented.
RECSIZ	Integer	Blocked record size.
REFCNT	Integer	Reference count of processes using the device.
REMOTE_DEVICE	String	TRUE or FALSE to indicate whether the device is a remote device.
RND	String	TRUE or FALSE to indicate whether the device allows random access.
ROOTDEVNAM	String	Device name of the root volume in a volume set (disks only).
RTM	String	TRUE or FALSE to indicate whether the device is a real-time device.
SDI	String	TRUE or FALSE to indicate whether the device is single-directory structured.
SECTORS	Integer	Number of sectors per track (disks only).
SERIALNUM	Integer	Volume serial number (disks only).
SERVED_DEVICE	String	TRUE or FALSE to indicate whether the device is a served device.
SET_HOST_TERMINAL	String	TRUE or FALSE to indicate whether the device is a remote terminal for a SET HOST session from a remote node.
SHDW_CATCHUP_COPYING	String	TRUE or FALSE to indicate whether the device is a member that is the target of a full copy operation.
SHDW_MASTER	String	TRUE or FALSE to indicate whether the device is a virtual unit.
SHDW_MASTER_NAME	String	Device name of the virtual unit that represents the shadow set of which the specified device is a member. F$GETDVI returns a null string ("") if the specified device is not a member, or is itself a virtual unit.
SHDW_MEMBER	String	TRUE or FALSE to indicate whether the device is a shadow set member.
SHDW_MERGE_COPYING	String	TRUE or FALSE to indicate whether the device is a merge member of the shadow set.
SHDW_NEXT_MBR_NAME	String	Device name of the next member in the shadow set. If you specify a virtual unit, F$GETDVI returns the device name of a member of the shadow set. If you specify the name of a shadow set member unit with the device name and item arguments, F$GETDVI returns the name of the "next" member unit or a null string if there are no more members. To determine all the members of a shadow set, first specify the virtual unit to F$GETDVI; on subsequent calls, specify the member name returned by the previous F$GETDVI call until it has finished, when it returns a null member name. The device name includes the allocation class if the allocation class is not zero; otherwise it includes the device name of the disk controller.
SHR	String	TRUE or FALSE to indicate whether the device is shareable.
SPL	String	TRUE or FALSE to indicate whether the device is being spooled.
SPLDEVNAM	String	Name of the device being spooled.
SQD	String	TRUE or FALSE to indicate whether the device is sequential block-oriented (that is, magnetic tape).
STS	Integer	Status information.
SWL	String	TRUE or FALSE to indicate whether the device is software write-locked.
TRACKS	Integer	Number of tracks per cylinder (disks only).
TRANSCNT	Integer	Volume transaction count.
TRM	String	TRUE or FALSE to indicate whether the device is a terminal.
TT_ACCPORNAM	String	The terminal server name and port name.
TT_ALTYPEAHD	String	TRUE or FALSE to indicate whether the terminal has an alternate type-ahead buffer (terminals only).
TT_ANSICRT	String	TRUE or FALSE to indicate whether the terminal is an ANSI CRT terminal (terminals only).
TT_APP_KEYPAD	String	TRUE or FALSE to indicate whether the keypad is in applications mode (terminals only).
TT_AUTOBAUD	String	TRUE or FALSE to indicate whether the terminal has automatic baud rate detection (terminals only).
TT_AVO	String	TRUE or FALSE to indicate whether the terminal has a VT100-family terminal display (terminals only).
TT_BLOCK	String	TRUE or FALSE to indicate whether the terminal has block mode capability (terminals only).
TT_BRDCSTMBX	String	TRUE or FALSE to indicate whether the terminal uses mailbox broadcast messages (terminals only).
TT_CHARSET	Integer	A bitmap indicating the coded character set supported by the terminal.
TT_CRFILL	String	TRUE or FALSE to indicate whether the terminal requires fill after a carriage return (terminals only).
TT_CS_KANA	String	TRUE or FALSE to indicate whether the terminal supports the DEC Kana coded character set.
TT_CS_KANJI	String	TRUE or FALSE to indicate whether the terminal supports the DEC Kanji coded character set.
TT_CS_HANZI	String	TRUE or FALSE to indicate whether the terminal supports the DEC Hanzi coded character set.
TT_CS_HANGUL	String	TRUE or FALSE to indicate whether the terminal supports the DEC Korean coded character set.
TT_CS_HANYU	String	TRUE or FALSE to indicate whether the terminal supports the DEC Hanyu coded character set.
TT_CS_THAI	String	TRUE or FALSE to indicate whether the terminal supports the DEC Thai coded character set.
TT_DECCRT	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT terminal (terminals only).
TT_DECCRT2	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT2 terminal (terminals only).
TT_DECCRT3	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT3 terminal (terminals only).
TT_DECCRT4	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT4 terminal (terminals only).
TT_DIALUP	String	TRUE or FALSE to indicate whether the terminal is connected to dialup (terminals only).
TT_DISCONNECT	String	TRUE or FALSE to indicate whether the terminal can be disconnected (terminals only).
TT_DMA	String	TRUE or FALSE to indicate whether the terminal has direct memory access (DMA) mode (terminals only).
TT_DRCS	String	TRUE or FALSE to indicate whether the terminal supports loadable character fonts (terminals only).
TT_EDIT	String	TRUE or FALSE to indicate whether the edit characteristic is set.
TT_EDITING	String	TRUE or FALSE to indicate whether advanced editing is enabled (terminals only).
TT_EIGHTBIT	String	TRUE or FALSE to indicate whether the terminal uses the 8-bit ASCII character set (terminals only).
TT_ESCAPE	String	TRUE or FALSE to indicate whether the terminal generates escape sequences (terminals only).
TT_FALLBACK	String	TRUE or FALSE to indicate whether the terminal uses the multinational fallback option (terminals only).
TT_HALFDUP	String	TRUE or FALSE to indicate whether the terminal is in half-duplex mode (terminals only).
TT_HANGUP	String	TRUE or FALSE to indicate whether the hangup characteristic is set (terminals only).
TT_HOSTSYNC	String	TRUE or FALSE to indicate whether the terminal has host/terminal communication (terminals only).
TT_INSERT	String	TRUE or FALSE to indicate whether insert mode is the default line editing mode (terminals only).
TT_LFFILL	String	TRUE or FALSE to indicate whether the terminal requires fill after a line feed (terminals only).
TT_LOCALECHO	String	TRUE or FALSE to indicate whether the local echo characteristic is set (terminals only).
TT_LOWER	String	TRUE or FALSE to indicate whether the terminal has the lowercase characters set (terminals only).
TT_MBXDSABL	String	TRUE or FALSE to indicate whether mailboxes associated with the terminal will receive unsolicited input notification or input notification (terminals only).
TT_MECHFORM	String	TRUE or FALSE to indicate whether the terminal has mechanical form feed (terminals only).
TT_MECHTAB	String	TRUE or FALSE to indicate whether the terminal has mechanical tabs and is capable of tab expansion (terminals only).
TT_MODEM	String	TRUE or FALSE to indicate whether the terminal is connected to a modem (terminals only).
TT_MODHANGUP	String	TRUE or FALSE to indicate whether the modify hangup characteristic is set (terminals only).
TT_NOBRDCST	String	TRUE or FALSE to indicate whether the terminal will receive broadcast messages (terminals only).
TT_NOECHO	String	TRUE or FALSE to indicate whether the input characters are echoed.
TT_NOTYPEAHD	String	TRUE or FALSE to indicate whether data must be solicited by a read operation.
TT_OPER	String	TRUE or FALSE to indicate whether the terminal is an operator terminal (terminals only).
TT_PAGE	Integer	Terminal page length (terminals only).
TT_PASTHRU	String	TRUE or FALSE to indicate whether PASSALL mode with flow control is available (terminals only).
TT_PHYDEVNAM	String	Physical device name associated with a channel number or virtual terminal.
TT_PRINTER	String	TRUE or FALSE to indicate whether there is a printer port available (terminals only).
TT_READSYNC	String	TRUE or FALSE to indicate whether the terminal has read synchronization (terminals only).
TT_REGIS	String	TRUE or FALSE to indicate whether the terminal has ReGIS graphics (terminals only).
TT_REMOTE	String	TRUE or FALSE to indicate whether the terminal has established modem control (terminals only).
TT_SCOPE	String	TRUE or FALSE to indicate whether the terminal is a video screen display (terminals only).
TT_SECURE	String	TRUE or FALSE to indicate whether the terminal can recognize the secure server (terminals only).
TT_SETSPEED	String	TRUE or FALSE to indicate whether you cannot set the speed on the terminal line (terminals only).
TT_SIXEL	String	TRUE or FALSE to indicate whether the sixel is supported (terminals only).
TT_SYSPWD	String	TRUE or FALSE to indicate whether the system password is enabled for a particular terminal.
TT_TTSYNC	String	TRUE or FALSE to indicate whether there is terminal/host synchronization (terminals only).
TT_WRAP	String	TRUE or FALSE to indicate whether a new line should be inserted if the cursor moves beyond the right margin.
UNIT	Integer	The unit number.
VOLCOUNT	Integer	The count of volumes in a volume set (disks only).
VOLNAM	String	The volume name.
VOLNUMBER	Integer	Number of the current volume in a volume set (disks only).
VOLSETMEM	String	TRUE or FALSE to indicate whether the device is a volume set (disks only).
VPROT	String	The volume protection mask.
WCK	String	TRUE or FALSE to indicate whether the device has write checking enabled.

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