jBase Statements @ Cursor and screen manipulation ABORT Program termination ABS Returns absolute value ALPHA Returns Boolean result for alphabetic check ASCII EBCDIC to ASCII conversion function ASSIGNED Returns Boolean result for variable assignment BITCHANGE Toggles the state of the specified bit BITCHECK Returns the current value of the specified bit BITLOAD Assigns values in the local bit table BITRESET Resets the value of the specified bit BITSET Sets the value of the specified bit BREAK Break key manipulation Loop Termination CALL Transfer of program execution to an external subroutine CALLC Transfer of program to an external C function CASE Conditional branching CATS Concatenates the corresponding elements in two dynamic arrays CHAIN Transfer of process control CHANGE Sub-string replacement CHAR Returns the ASCII character equivalent of a numeric expression CHARS Returns the ASCII character equivalents of the numeric expressions in a dynamic array CHDIR Changes the current directory CHECKSUM Returns numeric checksum for the supplied expression CLEAR Initializes all variables to zero CLEARCOMMON Initializes all unnamed common variables to a value of zero CLEARDATA Clears data that has been stacked by the DATA statement CLEARFILE Clears all the data from a file CLEARSELECT Clears active select lists CLOSE Closes a previously opened file CLOSESEQ Closes a previously opened sequential file COL1 / COL2 Position determination subsequent to use of the FIELD function COLLECTDATA Retrieves data passed from the PASSDATA clause of an EXECUTE statement COMMON Declares a list of variables and matrices that can be shared among programs COMPARE Compares two strings CONTINUE Used to skip code in a loop CONVERT Converts a character string to another COS Returns the cosine of an angle COUNT Returns the number of times that one string occurs in another CRT Outputs data to the terminal DATA Stores data for stacked input DATE Returns the date in internal form DCOUNT Counts the number of elements in a string separated by a specified delimiter DEBUG Passes control to the jBC debugger DECRYPT Decodes an encrypted string DEFC Declares an external Cto the jBC compiler DEFFUN Declares an external jBCto the jBC compiler DEL Removes a specified element from a dynamic array DELETE Deletes a record from a file DELETELIST Deletes a stored list DELETESEQ Deletes a sequential file DIMENSION Declares fixed length arrays to the compiler DISPLAY Outputs data to the terminal DOWNCASE Converts all uppercase characters in an expression to lowercase DQUOTE Encloses a value in double quotation marks DTX Returns the hexadecimal representation of a decimal expression EBCDIC Converts a string value from ASCII to EBCDIC ECHO Turns on or off the echoing of characters typed at the keyboard ENCRYPT Encrypts strings END Designates the end of a program or subroutine ENTER Unconditionally passes control to another executable program EQUATE Declares a symbol equivalent to a literal, variable or simple expression EXECUTE Allows execution of other programs and commands EXIT Halts the execution of a program EXP Returns the mathematical constant e to the specified power EXTRACT Archaic method of extracting elements from a dynamic array FADD Performs addition on two floating point numbers FDIV Performs division on two floating point numbers FIELD Returns one or more delimited fields from a string FIELDS Returns a dynamic array of delimited fields from a dynamic array of strings FILELOCK Attempts to lock an entire file for exclusive use by this program FIND Finds the location of a specified string within a dynamic array FINDSTR Finds the location of a specified string within a dynamic array FMT Formats a string to a specified pattern FMUL Performs multiplication on two floating point numbers FOLD Re-delimits a specified string with attribute marks FOOTING Defines a footing to be included at the bottom of an output page FORMLIST Creates an active select list from a dynamic array FOR Defines the start of a fixed increment loop construct FSUB Performs subtraction on two floating point numbers FUNCTION Declares a user-defined function GET Gets input from an opened serial device GETCWD Returns the name of the current working directory GETENV Determines the value of the specified environment variable GETLIST Retrieves a previously stored list GOSUB Causes execution of a local subroutine GOTO Causes program execution to jump to the code at a specified label GROUP Returns one or more delimited fields from a string GROUPSTORE Replaces one group of characters in a string with another group of characters HEADING Defines a heading to be included at the top of an output page HUSH Turns on or off the echoing of characters typed at the keyboard ICONV Converts data in external format to internal format IF Allows conditional execution of statements IN Gets raw data from the input device INCLUDE Includes code from other files INDEX Returns the position of a character or characters within another string INDICES Returns information about a file's secondary index INMAT Returns the number of dimensioned array elements INPUT Gets data from the input device INPUTCLEAR Clears the type-ahead buffer INPUTNULL Allows null input to be seen by the INPUT statement INS Allows the insertion of elements into a dynamic array INSERT Allows the insertion of elements into a dynamic array INT Truncates a numeric value to the nearest integer IOCTL Returns file information LEFT Extracts the first n characters from a string LEN Returns the character length of an expression LN Returns the value of the natural logarithm of a supplied expression LOCATE Finds the position of an element in a specified dimension of a dynamic array LOCK Sets an execution lock LOOP Defines the start of a loop construct LOWCASE Converts all uppercase characters in an expression to lowercase LOWER Lowers delimiters in a string to their next lowest value MAT Array element assignment MATBUILD Creates a dynamic array from a dimensioned array MATCHES Allows pattern matching to be applied to an expression MATPARSE Assigns the elements of a dynamic array to a dimensioned array MATREAD Reads a record and maps the elements into a dimensioned array MATREADU Reads and locks a record and maps the elements into a dimensioned array MATWRITE Transfers the contents of a dimensioned array to a specified record on disc MATWRITEU Transfers the contents of a dimensioned array to a specified record on disc and preserves locks MOD Returns the arithmetic modulo of two numeric expressions MSLEEP Pauses program execution for a specified number of milliseconds NEG Returns the inverse of a value NOT Inverts the Boolean value of an expression NULL Does nothing NUM Returns Boolean true if the supplied value is numeric OBJEXCALLBACK Communicates with a calling OBjEX program OCONV Converts data in internal format to external format ONGOSUB/ONGOTO  statements Transfers program execution to a label based upon a calculation OPEN Opens a file or device to a descriptor variable OPENDEV Opens a file or device for sequential reading and/or writing OPENINDEX Opens a specific index definition for a file OPENPATH Opens a file given an absolute or relative path OPENSEQ Opens a file for sequential reading and/or writing OPENSER Opens a device for serial IO OUT Sends raw characters to the current output device PAGE Causes the current output device to page PAUSE Allows processing to be suspended until an external event occurs PERFORM Allows execution of other programs and commands PRECISION Defines the number of digits of precision to be subsequently used PRINT Sends data to the current output device PRINTER PRINTERR Controls the destination of output from the PRINT statement Prints standard jBASE error messages PROCREAD Retrieves data passed from a jCL program to a jBC program PROCWRITE Passes data back to the primary input buffer of a calling jCL program PROGRAM Documents source code PROMPT Defines the prompt characters used by INPUT PUTENV Sets environment variables for the current process PWR Raises a number to a specified power QUOTE Encloses a value in double quotation marks RAISE Raises delimiters in a string to their next highest value READ Reads a record from an opened file into a variable READL Reads a record and takes a read-only shared record lock READLIST Retrieves a previously stored list READNEXT Moves forward through an index READPREV Moves backward through an index READSEQ Reads data from a file opened for sequential access READT Reads tape devices READU Reads a record from an opened file into a variable respecting locks READV Reads a field from a record in an opened file into a variable READVU Reads a field from a record in an opened file into a variable respecting locks RECORDLOCKED Returns the status of a record lock REGEXP Pattern matching with regular expressions RELEASE Releases record locks REM Returns the arithmetic modulo of two numeric expressions REMOVE Successively extracts delimited strings from a dynamic array REPLACE Archaic method of replacing elements in dynamic arrays RETURN Transfers execution to the caller of a subroutine/function or to a specific label in a program REWIND Issues a rewind command to attached device RIGHT Extracts the last n characters from a string RND Generates a random number RQM Pauses execution RTNDATA return specific data to the RTNDATA clause of another program's EXECUTE SADD Performs string addition SDIV Performs string division SELECT Creates a select list of elements in a specified variable SELECTINDEX Creates a dynamic array of keys based on a single selection of an index key SEND Sends output to a device SENTENCE Returns the command used to invoke a program and the arguments it was given SEQ Returns the numeric ASCII value of a character SIN Returns the sine of an angle SLEEP Pauses program execution for a specified number of seconds or until a specified time SMUL Performs string multiplication SORT Sorts a dynamic array SOUNDEX Converts strings to their phonetic equivalents SPACE Generates strings of spaces SPOOLER Returns spooler information SQRT Returns the square root of a number SQUOTE Encloses a value in single quotation marks SSUB Performs string subtraction STOP Program termination STR Performs string duplication SUBROUTINE Declares an external subroutine SUBSTRINGS Returns sub-strings of elements from a dynamic array SUM Sums elements of a dynamic array SYSTEM Returns system information SWAP Sub-string replacement TAN Returns the tangent of an angle TIME Returns the current system time TIMEDATE Returns the current time and date TRANS Retrieves a field from a file TRANSABORT Aborts and reverses the current transaction TRANSQUERY Used to determine if currently in a transaction TRANSTART Marks the beginning of a transaction TRANSEND Marks the end of a successfully completed transaction TRIM Removes characters from a string TRIMB Removes trailing blanks TRIMF Removes leading blanks UNASSIGNED Returns Boolean result for variable assignment UNLOCK Releases a previously locked execution lock UPCASE Converts all lowercase characters in an expression to uppercase WAKE Wakes a suspended process which has executed a pause statement WEOF Writes an end of file mark on an attached tape device WEOFSEQ Writes end of file mark on a file opened for sequential access WRITE Writes a record to a previously opened file WRITELIST Writes a list to the stored list file WRITESEQ Writes data to a file opened for sequential access WRITET Writes data to a tape device WRITEU Writes a record to a previously opened file preserving locks WRITEV Writes a record field to a previously opened file WRITEVU Writes a record field to a previously opened file preserving locks XLATE Retrieves a field from a file XTD Returns the decimal representation of a hexadecimal expression