FOR$IOS_F6096. An expression used to index an array was smaller than the lower dimension bound or larger than the upper dimension bound.

FOR$IOS_F6097. An expression used to index a character substring was illegal.

FOR$IOS_F6098. The label assigned to the integer-variable name was not specified in the label list of the assigned GOTO statement.

FOR$IOS_F6099. This error occurs whenever integer arithmetic results in overflow.

FOR$IOS_F6100. An integer item exceeded the legal size limits.

An INTEGER(1) item must be in the range -127 to 128. An INTEGER(2) item must be in the range -32,767 to 32,768. An INTEGER(4) item must be in the range -2,147,483,647 to 2,147,483,648.

FOR$IOS_F6101. Either an illegal character appeared as part of an integer, or a numeric character larger than the radix was used in an alternate radix specifier.

FOR$IOS_F6102. An invalid real number was read from a file, an internal variable, or the console. This can happen if an invalid number is generated by passing an illegal argument to an intrinsic function -- for example, SQRT(-1) or ASIN(2). If the invalid result is written and then later read, the error will be generated.

FOR$IOS_F103. An illegal character appeared as part of a real number.

FOR$IOS_F6104. A real value was too large. Floating-point overflows in either direct or emulated mode generate NaN (Not-A-Number) exceptions, which appear in the output field as asterisks (*) or the letters NAN.

FOR$IOS_F6106. This error occurs when assignment to an integer is out of range. This message appears only if the /check:bounds option is used in compiling.

FOR$IOS_F6200. The program tried to perform formatted I/O on a unit opened with FORM='UNFORMATTED' or FORM='BINARY'.

FOR$IOS_F6201. The program tried to perform list-directed I/O on a file that was not opened with FORM='FORMATTED' and ACCESS='SEQUENTIAL'.

FOR$IOS_F6202. When a special device such as CON, LPT1, or PRN is opened in an OPEN statement, its access must be sequential and its format must be either formatted or binary. By default ACCESS='SEQUENTIAL' and FORM='FORMATTED' in OPEN statements.

To generate this error the device's OPEN statement must contain an option not appropriate for a terminal device, such as ACCESS='DIRECT' or FORM='UNFORMATTED'.

FOR$IOS_F6203. A REC= option was included in a statement that transferred data to a file that was opened with the ACCESS='SEQUENTIAL' option.

FOR$IOS_F6204. If a file is opened with FORM='FORMATTED', unformatted or binary data transfer is prohibited.

FOR$IOS_F6205. The A edit descriptor was not specified when a character data item was read or written using formatted I/O.

FOR$IOS_F6206. The E, F, D, or G edit descriptor was not specified when a real data item was read or written using formatted I/O.

FOR$IOS_F6207. The I edit descriptor was not specified when an integer data item was read or written using formatted I/O.

FOR$IOS_F6208. The L edit descriptor was not specified when a logical data item was read or written using formatted I/O.

FOR$IOS_F6209. An OPEN statement specified a connection between a unit and a filename that was already in effect. In this case, only the BLANK= option can have a different setting.

FOR$IOS_F6210. The program tried to perform namelist I/O on a file that was not opened with FORM='FORMATTED' and ACCESS='SEQUENTIAL'.

FOR$IOS_F6211. IOFOCUS was specified in an OPEN or INQUIRE statement for a non-window unit. The IOFOCUS option can only be used when the unit opened or inquired about is a QuickWin child window.

FOR$IOS_F6212. IOFOCUS was specified in an OPEN or INQUIRE statement for a non-QuickWin application. The IOFOCUS option can only be used when the unit opened or inquired about is a QuickWin child window.

FOR$IOS_F6213. TITLE was specified in an OPEN or INQUIRE statement for a non-window unit. The TITLE option can only be used when the unit opened or inquired about is a QuickWin child window.

FOR$IOS_F6214. TITLE was specified in an OPEN or INQUIRE statement for a non-QuickWin application. The TITLE option can only be used when the unit opened or inquired about is a QuickWin child window.

FOR$IOS_F6300. STATUS='KEEP' was specified for a scratch file; this is illegal because scratch files are automatically deleted at program termination.

FOR$IOS_F6301. STATUS='SCRATCH' should not be used in a statement that includes a filename.

FOR$IOS_F6302. More than one alternate radix for numeric I/O was specified. F6302 can indicate an error in spacing or a mismatched format for data of different radices.

FOR$IOS_F6303. A radix specifier was not between 2 and 36, inclusive. Alternate radix constants must be of the form n#ddd... where n is a radix from 2 to 36 inclusive and ddd... are digits with values less than the radix. For example, 3#12 and 34#7AX are valid constants with valid radix specifiers. 245#7A and 39#12 do not have valid radix specifiers and generate error 569 if input.