BLASTscript supports two kinds of variables, user-defined variables and reserved variables. Reserved variables are an important part of any program that tests the condition of the communications session or the results of other program statements.

Reserved variables are classified by access privilege. Most reserved variables are read/write, meaning that a script can both read the value of the variable and write a new value for it through a SET or LET statement. Other reserved variables are read-only. An attempt by a script to write a new value for a read-only variable will result in a syntax error. Finally, a few reserved variables are write-only. An attempt to read the value of a write-only variable will be ignored by the script interpreter.

While it is possible for a script to set the value of many reserved variables, the new setting may not be invoked immediately. In particular, changes to communications port parameters, such as @BAUDRATE, are ignored until an offline-online transition occurs.

If it is necessary for a script to change the setting of any communications port parameter, the changes should be bracketed with explicit OFFLINE and ONLINE commands:

OFFLINE set @BAUDRATE = 300 ONLINE

NOTE: several new reserved variables have been introduced under Data Pump. Also, some reserved variables from previous versions of BLAST could not be implemented under Data Pump because they apply to features that are not supported, such as keyboard files, the Kermit file transfer protocol, and DOS background operation. See Reserved Variable Comparison Chart for a comparison of the reserved variables supported by Data Pump and those supported by other versions of BLAST.

Reserved Variables Quick Reference

The following list offers a quick reference to the reserved variables supported by Data Pump.

@7BITCHN @ACKFREQ @ARGn @BAUDRATE @BLASTDIR @BPRINTER @CLASS @COMMOPEN @COMMPORT @COMP_LVL @CONNTIMO @DATAPUMPREPLY @DATE @DATEFORMAT @DCD @DCDLOSS @DS_BITS @DTR @EFERROR @EFLOG @ELAPTIME

@ENABLEFS @ENABLERCMD @ENTRY @FILECNT @FTPCONV @FULLSCR @INACTIMO @LAUNCHST @LISTDELIM @LOCALDIR @LOGDATEFORMAT @LOGFILE @LOGTIMO @MODEM @NETPORT @NETPROTOCOL @NETSERVICE @NUMDISC @ONERROR @ORGANS @PAKTSZ

@PARITY @PASSWORD @PHONEBOOK @PHONENO @PROMPTCH @PROTOCOL @RBYTES @RCLASS @RCOMP_LEV @REMOTEDIR @RETRAN @RFAILURE @RLINEQ @RNAME @RRET @RSERIAL @RSITE @RSIZE @RSTATUS @RSUCCESS @RTIME

@RTSCTS @SBYTES @SCOMP_LEV @SCRFILE @SCRIPTDIR @SCRIPTERR @SCRLREG @SERIAL @SESSIONID @SETUPDIR @SFAILURE @SITE @SLINEQ @SNAME @SRET @SSIZE @SSTATUS @SSUCESS @STATUS @STIME @SYSTYPE

@TIME @TIMEFORMAT @TRANSPORT @TRPASSWD @TTRAPTO @UPLOADEOL @USERID @USERIF @VERSION @WDWSIZ @XFERTRACE @XLOG @XMEOTCHALLENGE @XMEOTINTERVAL @XMEOTRETRIES @XMPACKETTO @XMPADCHAR @XMRETRIES @XMTIMEOUT @XONXOFF

@7BITCHN

read/write YES  [NO]

For BLAST protocol transfers, specifies the data path width.

BLAST Protocol Settings: 7-Bit Channel

@ACKFREQ

read/write 1 - window size  [4]

For BLAST protocol transfers, specifies the frequency of acknowledgments by the remote system.

BLAST Protocol Settings: ACK Request Freq

@ARGn

read-only user-defined

Stores variables passed from the operating system command line. The n specifies the argument, from "0" to "9" (@ARG0, @ARG1, etc.).

@BAUDRATE

read/write 110  300  600  1200  2400  4800 [9600]  19.2K  38.4K  57.6K  115.2K

Specifies the serial port device driver speed. The default value of this variable is set during the BLAST installation process.

Communications Settings: Baud Rate

@BLASTDIR

read-only

Specifies the directory path for BLAST executable files and support files.

@BPRINTER

read-only

Contains the name of the current default printer; not directly accessible for writing. If more than one printer is available, changes can be made to @BPRINTER with SETPRINTER command.

@CLASS

read-only

Stores the BLAST class number of the local system.

@COMMOPEN

read-only 1 or 0

Indicates whether Data Pump successfully has executed an ONLINE command. Value is "1" when Data Pump is online; otherwise it is "0."

@COMMPORT

read/write any valid commport

Specifies the serial communications port for the current session, e.g. COM1:.

Communications Settings: Connection

@COMP_LVL

read/write 0 - 6  [4]

Specifies the maximum sending and receiving compression levels that can be used. Level "0" specifies no compression. Level "6" is the highest level of compression. Setting this variable is effectively equal to setting both the @RCOMP_LEV and @SCOMP_LEV reserved variables.

@CONNTIMO

read/write 0 - 999  [60]

Specifies the number of seconds BLAST will wait for a modem connection.

Communications Settings: Connection Timeout

@DATAPUMPREPLY

read-only

Holds the response to the last Data Pump message; used in conjunction with the DATAPUMP command.

@DATE

read-only

Contains the current date in mm/dd/yy format. The date format is controlled by @DATEFORMAT.

@DATEFORMAT

read/write formatting string

Holds a formatting string for @DATE. Setting @DATEFORMAT to "" (the empty string) resets it to the format "%m/%d/%y." To obtain a four-digit year, the formatting code %Y may be used (i.e., %m/%d/%Y).

@DCD

read-only

Stores the Data Carrier Detect (DCD) status from the modem. If set to "1," the carrier is detected by the modem. @DCD is set to "0" if the modem does not sense a carrier from another modem. The modem must be set appropriately for this variable to reflect the state of the data carrier; and the modem cable, if present, must have the appropriate conductor.

@DCDLOSS

read/write ABORT  [IGNORE]

For BLAST protocol transfers, specifies whether BLAST will ABORT after or IGNORE DCD loss. This feature requires appropriate modem initialization and cable configuration. See @DCD above.

BLAST Protocol Settings: DCD Loss Response

@DS_BITS

read/write 7/1  7/2  [8/1]  8/2

Specifies Data and Stop bits. Under Xmodem, the value of @DS_BITS should be set to the default, "8/1."

Communications Settings: Data Bits/Stop Bits

@DTR	write-only 0 or 1

Sets the condition of the data terminal ready signal--"0" for drop, "1" for raise. Writing to @DTR is equivalent to OFFLINE (for @DTR = 0) and ONLINE (@DTR = 1) commands.

@EFERROR

read/write [0] - 9

Returns the error code of the last error in a file transfer. If no error occurs during the session, @EFERROR will remain set at zero.

@EFERROR should be reset to "0" for continued testing during a session.

Because the BLAST protocol queues file transfer requests and then continues execution until ESC is encountered, testing @EFERROR within a FILETRANSFER-ESC block may not produce expected results.

Following completion of a file transfer, @EFERROR will be set to one of the following values reflecting the way in which file transfer was exited:

 0--No errors
-1--Initialization error
-2--Local operator ended activity with ABORT
-3--Remote disconnect
-4--Never got starting message (Logon Timeout)
-5--Lost communications with remote system (Inactivity Timeout)
-6--Private network error; private network version of BLAST required
-7--DCD loss during file transfer logon
-8--DCD loss during file transfer session
-9--File transfer session not established

Not all values are available or appropriate with all protocols. For example, code -6 is specific to the BLAST protocol only.

Example:

connect set @PROTOCOL = "BLAST" SET @EFERROR = "0" filetransfer send "test1.fil", "test1.fil" send "recv1.fil", "recv1.fil" esc IF @EFERROR NOT = "0"   display "Error number = ", @EFERROR, "occurred"   display "See Error Messages for details."   SET @EFERROR = "0" end disconnect return 0

@EFLOG

read/write filename

Specifies a separate log file that will log all transfer session errors and completions. Setting @EFLOG to a valid filename starts transfer session logging. Setting @EFLOG = "" (null) turns off transfer logging. The information written to the file appears exactly as it does on the user's screen, allowing easier parsing of a BLAST transfer session.

@ELAPTIME

read-only

Contains the current elapsed online time for a BLAST communications session. The value is in hh:mm:ss format. This variable can be reset within a BLAST script by any SET statement, for example:

set @ELAPTIME = "it doesn't matter"

@ENABLEFS

read/write YES  [NO]

For BLAST protocol transfers, enables the Forward and Store file transfer options that automatically delete files.

BLAST Protocol Settings: Enable FWD and STR

@ENABLERCMD

read/write [YES]  NO

For BLAST protocol transfers, enables the Overwrite file transfer option and allows commands to be sent from the remote system.

BLAST Protocol Settings: Allow OVW and Remote Cmds

@ENTRY

read-only

Stores the name of current phonebook listing.

@FILECNT

read-only

Returns the size of the file after a successful FOPENx command or the number of bytes read by FREAD and FREADB.

@FTPCONV

read/write [BINARY]  ASCII

Specifies whether the file will undergo text translation or be treated as binary data during transmission.

FTP Settings: File Conversion

@FULLSCR

read/write [YES]  NO

Specifies whether the top four lines of the BLAST menu display will be suppressed while in terminal mode. Set to "YES" for suppression, "NO" to enable the menu.

@INACTIMO

read/write 0 - 999  [120]

For BLAST protocol transfers, specifies the time interval (in seconds) that BLAST will wait for a packet of data from the remote computer before timing out.

BLAST Protocol Settings: Inactivity Timeout

@LAUNCHST

read/write any ASCII string [\r]

For BLAST protocol transfers, specifies the launch string to be appended to BLAST protocol blocks. Any ASCII string may be used, with control characters represented by a backslash followed by a three-digit octal number. The default is a carriage return (\r). This variable may be necessary for protocol converter connections. For a list of ASCII characters, see ASCII Character Set.

BLAST Protocol Settings: Launch String

@LISTDELIM

read/write user-defined

Specifies the character to be used to separate items in a list. By default, the list delimiter character is the ASCII NUL ("\000"). To display a list to the script viewer, the delimiter should be set to another value such as tab ("\011"). The list delimiter must be set before the list is created.

@LOCALDIR

read/write user-defined

Specifies the local working directory. For a description of scripting shortcuts that can be used with @LOCALDIR, see Phonebook Field and Scripting Shortcuts.

@LOGDATEFORMAT

read/write filename

Holds a formatting string for printing a time stamp in log files. Defaults to "%m/%d/%y%H:%M/%S." May be set to "" (null string).

@LOGFILE

read/write filename

Stores the name of the log file that will record all communications session activity. Setting @LOGFILE = "" closes the current log file. For a description of scripting shortcuts that can be used with @LOGFILE, see Phonebook Field and Scripting Shortcuts.

General Properties Page: Log File

@LOGTIMO

read/write 0 - 999  [120]

For BLAST protocol transfers, specifies the number of seconds that BLAST will attempt to establish a session with the remote computer before aborting. Logon Timeout affects BLAST protocol file transfers. If zero is entered, no timeout will occur and BLAST will attempt to establish a BLAST filetransfer session with the remote computer indefinitely.

BLAST Protocol Settings: Logon Timeout

@MODEM

read/write any valid modem type

Stores the modem type on the local computer. The name must correspond to the name of a script in the Modems\ directory.

General Properties Page: Modem Type

@NETPORT

read/write user-defined

Specifies the network port number to use. The default port number for Telnet connections is "23."

Network Parameters: Port Number

@NETPROTOCOL

read/write TELNET  [SOCKET]  FTP  SERIAL

Specifies the protocol to use for network connections.

@NETSERVICE

read/write any valid network destination

Specifies a network address.

Example:

Offline Set @TRANSPORT = "socket" Set @NETPORT = "23" Set @NETPROTOCOL = "Telnet" Set @NETSERVICE = "198.85.116.193" Online

@NUMDISC

read/write 0 - 9  [3]

For BLAST protocol transfers, specifies the number of additional disconnect blocks (after the first disconnect block) that BLAST sends when exiting file transfer mode. The default value of "3" indicates four total disconnect blocks.

BLAST Protocol Settings: Disconnect Blocks

@ONERROR

read/write [STOP]  CONTINUE

Specifies BLAST's response to non-fatal BLASTscript errors. A non-fatal error is one that results in the message "Press any key to continue."

When @ONERROR is set to "STOP," BLAST will pause when an error is encountered, display the appropriate message, and wait for the user to press a key before continuing. When @ONERROR is set to "CONTINUE," BLAST will display the same message, pause for one second, then automatically continue program execution.

@ORGANS

read/write [ORIGINATE]  ANSWER

Specifies how the CONNECT command will operate. If set to "ANSWER," CONNECT will wait for a remote computer to establish the communications link. If set to "ORIGINATE," CONNECT will try to dial a number.

Communications Settings: Wait for Call

@PAKTSZ

read/write 1 - 4085  [256]

For BLAST protocol, specifies the size of the packet used for file transfers.

BLAST Protocol Settings: Block Size

@PARITY

read/write [NONE]  ODD  EVEN

Specifies the parity to be used in serial communications sessions. Under Xmodem, the value of @PARITY should be set to the default, "NONE."

Communications Settings: Parity

@PASSWORD

write-only user-defined

Stores the user's password for the remote computer. The Systems.scr library program uses @PASSWORD to answer prompts from a multi-user computer. The CONNECT program will prompt the user to enter a password if none is specified in the phonebook listing or if @PASSWORD is null. Thereafter, the variable @PASSWORD contains the value entered by the user. For security, the value of @PASSWORD cannot be displayed to the screen. This feature applies to all string values that match @PASSWORD. Thus, script commands like

set @trick = @PASSWORD display @trick

will not display the value of the password.

BLAST makes an effort to encode and keep stored passwords secure. Unfortunately, it is a very simple task to echo a stored password off of either a modem or a remote system that has echo enabled. A script as simple as "tsend @PASSWORD" can compromise stored passwords. If the security of a password is vital, BLAST recommends not storing it in the phonebook listing. If a password must be stored in the phonebook listing, you should take other measures to keep the phonebook listing secure.

General Properties Page: Password

@PHONEBOOK

read-only

Stores the name of the phonebook that was most recently loaded.

@PHONENO

read/write user-defined

Stores the phone number of the remote computer. The CONNECT statement uses this number to dial out.

Communications Settings: Phone Number

@PROMPTCH

read/write [NONE]  any ASCII character

Specifies the prompt character used during text uploads to half-duplex systems. BLAST waits after each line for the remote computer to send the prompt before sending the next line.

@PROTOCOL

read/write [BLAST]  XMODEM  XMODEM1K  FTP

Specifies the protocol for a communications session.

Protocols Properties Page: Protocol List

@RBYTES

read-only

In the BLAST Extended Log, holds the number of bytes received in the current transfer.

@RCLASS

read-only

Stores the BLAST class number of the remote system. This is valid during and after file transfer.

@RCOMP_LEV

read/write 0 - 6  [4]

For BLAST protocol transfers, specifies the maximum receiving level of compression that can be used during a session. Level "0" specifies no compression. Level "6" is the highest level of compression.

BLAST Protocol Settings: Compression Level Receive

@REMOTEDIR

read/write any valid directory

Specifies remote directory.

@RETRAN

read/write 0 - 9999  [4]

For BLAST protocol transfers, specifies the maximum number of seconds BLAST will pause before resending a packet. For example, if @WDWSIZ is set to "5" and @RETRAN is set to "30," BLAST will attempt to resend the fifth packet every thirty seconds if no acknowledgment is received.

BLAST Protocol Settings: Retransmit Timer

@RFAILURE

read-only

Stores the number of files unsuccessfully received during a file transfer session.

@RLINEQ

read-only GOOD  FAIR  POOR  DEAD

For BLAST protocol transfers, stores the current receiving line quality.

@RNAME

read-only

In the BLAST Extended Log, holds the name of the file being received.

@RRET

read-only

In the BLAST Extended Log, holds the number of retries in the current transfer.

@RSERIAL

read-only

Stores the serial number of the BLAST version running on the remote system.

@RSITE

read-only

Stores the BLAST site number of the remote system. This is valid during and after file transfer.

@RSIZE

read-only

In the BLAST Extended Log, holds the size of the file received.

@RSTATUS

read-only

In the BLAST Extended Log, holds the completion status of files received. Possible values are:

RCOM--Receive completed.
LERROR--Receive not completed due to local error.
RERROR--Receive not completed due to remote error.
RINTR--Receive not completed due to operator interruption.

@RSUCCESS

read-only

Stores the number of files successfully received during a file transfer session.

@RTIME

read-only

In the BLAST Extended Log, holds the elapsed time of the current transfer.

@RTSCTS

read/write [YES]  NO

Specifies whether hardware flow control is enabled. Not all computers support RTS/CTS flow control.

Communications Settings: RTS/CTS

@SBYTES

read-only

In the BLAST Extended Log, holds the number of bytes sent in the current transfer. Note that this value can be different than the actual file size.

@SCOMP_LEV

read/write 0 - 6  [4]

For BLAST protocol transfers, specifies the maximum sending level of compression that can be used during a session. Level "0" specifies no compression. Level "6" is the highest level of compression.

BLAST Protocol Settings: Compression Level Send

@SCRFILE

read/write filename

Specifies the name of a BLAST script that will start immediately after BLAST begins execution.

General Properties Page: Script File

@SCRIPTDIR

read-only filename

Is a subdirectory of the BLAST "Factory" directory. For the case where BLASTDIR is C:\DP\:

C:\DP\                          @BLASTDIR   Blast\                        the "Factory" directory     Scripts\                    @SCRIPTDIR       Modems\       Systems\       Autopoll\   Userscripts\                  for user scripts

@SCRIPTDIR is searched by CONNECT, DISCONNECT, and FILETRANSFER for system scripts (i.e., Modems.scr). Users should store their own scripts in Userscript\ rather than Scripts\ because Userscripts\ is searched by CALL and CALLSUB before @SCRIPTDIR is searched.

@SCRIPTERR

read-only

Returns the numeric value of the last error that occurred in the BLAST script.

@SCRLREG

read/write [ON]  OFF

Controls data display in the scrolling region (lines 5-24). If set to "ON," characters received in terminal mode will be displayed and BLAST scripts can use the DISPLAY statement. .

NOTE:  If @SCRLREG is set to "ON," it returns the value "1"; if it is set to "OFF," it returns the value "0".

@SERIAL

read-only

Stores the serial number of the BLAST version running on the local system.

@SESSIONID

read-only

Is unique identifier for the current BLAST session.

@SETUPDIR

read-only

Specifies the directory path where BLAST phonebooks are stored.

@SFAILURE

read-only

Stores the number of files unsuccessfully sent during a file transfer session.

@SITE

read-only

Stores the BLAST site number of the local system.

@SLINEQ

read-only GOOD  FAIR  POOR  DEAD

For BLAST protocol transfers, stores the current sending line quality. The packet size can be increased to take advantage of clean lines, or decreased to avoid problems with noisy lines.

@SNAME

read-only

In the BLAST Extended Log, holds the name of the file being sent.

@SRET

read-only

In the BLAST Extended Log, holds the number of retries in the current transfer.

In the BLAST Extended Log, holds the size of the file sent.

In the BLAST Extended Log, holds the completion status of file sent. Possible values are:

SCOMP--Send completed.
LERROR--Send not completed due to local error.
RERROR--Send not completed due to remote error.
SINTR--Send not completed due to operator interruption.

@SSUCESS

read-only

Stores the number of files successfully sent during a file transfer session.

@STATUS

read/write command-specific

Returns a condition code set by the last statement that reported a completion status. Most statements that succeed set @STATUS to "0" and return a nonzero value for an error. For example, the FILETRANSFER command sets @STATUS to "0" if Filetransfer mode was successfully entered. Checking @STATUS at the end of a FILETRANSFER block, however, does not reflect the success of an entire FILETRANSFER block, but rather the @STATUS setting of the last command in the block capable of setting @STATUS. (To check the overall success of a FILETRANSFER block, use the reserved variable @EFERROR).

Some commands that return numeric results (e.g., STRINX, TTRAP) set @STATUS to "0" to indicate a null condition. When Data Pump returns from a CALLed script, @STATUS is set to the numeric constant given as the argument in the RETURN statement or to "0" if no numeric constant has been given.

For a list of the commands that set @STATUS, see The Status of @STATUS.

@STIME

read-only

In the BLAST Extended Log, holds the elapsed time of the current transfer.

@SYSTYPE

read/write any valid system type

Specifies the remote computer type (UNIX, VMS, etc.). The Systems.scr library uses this variable to determine how to perform certain system functions, such as logging on and disconnecting from remote multi-user computers.

General Properties Page: System Type

@TIME

read-only

Contains the current time in hh:mm:ss format. The format is controlled by @TIMEFORMAT.

@TIMEFORMAT

read/write formatting string

Holds a formatting string for @TIME. Setting @TIMEFORMAT to "" (the empty string) resets it to the format "%H:%M:%S."

@TRANSPORT

read/write SOCKET or SERIAL

Identifies the raw port used for the connection.

Transport Properties Page: Transport Method

@TRPASSWD

read/write up to 8 characters

For BLAST protocol, specifies a case-sensitive password (up to 8 characters) that a remote user must send before a file transfer is allowed. If this variable is set to other than null, then the remote computer must send the password before a file can be transferred to or from your computer.

NOTE:   @TRPASSWD is intended to validate remote users logging onto your system. If Data Pump running on your system executes a script that sets @TRPASSWD to something other than a null, you will not be able to receive files without the remote computer sending the password.

BLAST Protocol Settings: Transfer Password

@TTRAPTO

read/write [0]  7200

Specifies the length of time for TTRAP to wait. This value is ignored if the value is given explicitly in a TTRAP statement.

@UPLOADEOL

read/write any string [\r]

Contains a string to be appended to each line of a text file transmitted to the remote system by the TUPLOAD command.

@USERID

read/write user-defined

Stores the user's identification for the remote computer. The Systems.scr library uses this variable in answering the logon prompts from a multi-user computer.

General Properties Page: Login Account

@USERIF

read/write [ON]  OFF

Specifies whether the menu region (lines 1-4) is displayed. If set to "ON," the region is displayed. If set to "OFF," lines 1-4 become part of the scrolling region.

NOTE:  If @USERIF is set to "ON," it returns the value "1"; if it is set to "OFF," it returns the value "0".

@VERSION

read-only

Identifies the release version of the script interpreter.

@WDWSIZ

read/write 1-16  [16]

For BLAST protocol transfers, specifies the window size. "Window" refers to the number of packets that can be sent by the local computer to the remote without an acknowledgment from the remote.

BLAST Protocol Settings: Window Size

@XFERTRACE

read/write

Maps to the file in the Transfer Trace field of the Settings dialog of the selected protocol. For a description of scripting shortcuts that can be used with @XFERTRACE, see Phonebook Field and Scripting Shortcuts.

@XLOG

read/write ON  [OFF]

Specifies use of Extended Logging, which provides detailed information about file transfers.

General Properties Page: Enable Extended Logging

@XMEOTCHALLENGE

read/write YES  [NO]

For Xmodem, specifies whether to challenge EOT with a NAK and wait for a response.

Xmodem Protocol Settings: EOT Challenge

@XMEOTINTERVAL

read/write [1] - 10

For Xmodem, specifies how long to wait for EOT response or, if sending a file, the interval between EOT characters.

Xmodem Protocol Settings: EOT Timeout

@XMEOTRETRIES

read/write 1 - 10  [5]

For Xmodem, specifies number of times to repeat an EOT packet.

Xmodem Protocol Settings: EOT Retries

@XMPACKETTO

read/write 1 - 10  [4]

For Xmodem, specifies maximum time to wait between sending of a packet and acknowledgement of a packet.

Xmodem Protocol Settings: Inter-Packet Timeout

@XMPADCHAR

read/write 0 - 255  [26]

For Xmodem, specifies end-of-packet character.

Xmodem Protocol Settings: Pad Character

@XMRETRIES

read/write 2 - 50  [10]

For Xmodem, specifies number of times to try to resend a packet.

Xmodem Protocol Settings: Retries

@XMTIMEOUT

read/write 1 - 5000  [60]

For Xmodem, specifies the number of seconds to wait before starting the protocol. Adjust this parameter if Xmodem in Data Pump and Xmodem on the remote system are having difficulty initializing.

Xmodem Protocol Settings: Timeout

@XONXOFF

read/write YES  [NO]

Specifies whether software flow control is enabled. This variable should not be used with Xmodem.

Communications Settings: XON/XOFF

New Reserved Variables

The following reserved variables are unique to Data Pump.

@BPRINTER--Identifies currently selected printer.
@COMMOPEN--Indicates online/offline status.
@DATAPUMPREPLY--Holds response from last DATAPUMP command.
@FTPCONV--Specifies whether to do text translation for FTP transfers.
@LISTDELIM--Specifies character used to delimit items in lists.
@LOCALDIR--Specifies local working directory.
@NETPORT--Specifies network port number.
@NETPROTOCOL--Specifies protocol to use with network connections.
@REMOTEDIR--Specifies remote directory.
@SCRIPTDIR--Is pathname of Scripts\ directory.
@SESSIONID--Is unique identifier for a session.
@TRANSPORT--Identifies raw port (serial or socket).
@TTRAPTO--Specifies time a TTRAP waits when no explicit value is given.
@UPLOADEOL--Specifies the end-of-line upload string.
@XMEOTCHALLENGE--Specifies whether to challenge 1st EOT with NAK for Xmodem.
@XMEOTINTERVAL--Specifies EOT timeout interval for Xmodem.
@XMEOTRETRIES--Specifies number of times to transmit an EOT packet for Xmodem.
@XMPACKETTO--Specifies time to wait between packet send and ACK for Xmodem.
@XMPADCHAR--Specifies end-of-packet pad character for Xmodem.
@XMRETRIES--Specifies number of times to try to send a NAK'd packet for Xmodem.
@XMTIMEOUT--Specifies time to allow for beginning Xmodem.

Reserved Variable Comparison Chart

The following chart compares support of reserved variables by different versions of BLAST. Reserved variables used by other versions of BLAST but not by Data Pump are retained by Data Pump as nonfunctioning reserved variables. Thus, when running Data Pump, these variables should not be used.