List of Topics

• $Metacommand error
• $STATIC, $DYNAMIC Metacommands
• ABS, SGN Functions
• AS Keyword
• AS clause required
• AS clause required on first declaration
• ASC, CHR$ Functions
• ASCII Character Codes
• ATN, COS, SIN, TAN Functions
• About Command
• Argument-count mismatch
• Array Limits
• Array already dimensioned
• Array not defined
• BEEP Statement
• BSAVE, BLOAD Statements
• Bad file mode
• Bad file name
• Bad file name
• Bad file name or number
• Bad record length
• Bad record number
• Basic Character Set
• Beyond QBasic
• Blank lines not allowed
• Block IF without END IF
• Boolean Operators
• Breakpoint not allowed on CASE clause
• CALL ABSOLUTE Statement
• CALL Statement
• CASE without SELECT
• CDBL, CSNG Functions
• CHAIN Statement
• CHDIR, MKDIR, RMDIR, FILES Statements
• CINT, CLNG Functions
• CIRCLE Statement
• CLEAR Statement
• CLOSE Statement
• CLS Statement
• COLOR Statement
• COM, ON COM Statements
• COMMON Statement
• CONST Statement
• Cannot continue
• Cannot cross procedure boundary
• Cannot set Tabs
• Cannot start with 'FN'
• Change Command
• Change Dialog
• Change Dialog
• Change complete
• Clear All Breakpoints Command
• Clear Command
• Color Attributes and Values
• Communication-buffer overflow
• Contents Command
• Continue Command
• Converting BASICA Programs
• Copy Command
• Copyright and Trademarks
• Cut Command
• DATA statements were moved
• DATA, READ, RESTORE Statements
• DATE$ Function and Statement
• DECLARE Statement
• DEF FN Statement
• DEF FN not allowed in control statements
• DEF SEG Statement
• DEF without END DEF
• DEFtype Statements
• DIM, REDIM Statements
• DO without LOOP
• DO...LOOP Statement
• DRAW Statement
• Data Type Keywords
• Declaring User-Defined Keys
• Delete procedure confirmation
• Device I/O error
• Device fault
• Device timeout
• Device timeout
• Device unavailable
• Differences from BASICA
• Disk full
• Disk not ready
• Disk-media error
• Display Command
• Display Dialog
• Division by zero
• Duplicate definition
• Duplicate definition
• Duplicate label
• Duplicate procedure names in file
• ELSE without IF
• END DEF without DEF
• END IF without Block IF
• END SELECT without SELECT
• END SUB or END FUNCTION must be last line
• END Statement
• END TYPE without TYPE
• ENVIRON$ Function, ENVIRON Statement
• EOF Function
• ERASE Statement
• ERDEV, ERDEV$ Functions
• ERR, ERL Functions
• ERROR Statement
• EXIT DO not within DO...LOOP
• EXIT FOR not within FOR...NEXT
• EXIT Statement
• EXP, LOG Functions
• Editing Keys
• Element not defined
• Error-Handling Example
• Exit Command
• Expression too complex
• FIELD Statement
• FIELD overflow
• FIELD statement active
• FILEATTR Function
• FIX, INT Functions
• FOR index variable already in use
• FOR without NEXT
• FOR...NEXT Statement
• FRE Function
• FREEFILE Function
• FUNCTION Statement
• Feature unavailable
• File already exists
• File already open
• File not found
• File not saved
• Find Command
• Find Command Dialog
• Fixed-length string illegal
• Format Specifiers
• GET, PUT Statements (File I/O)
• GET, PUT Statements (Graphics)
• GOSUB...RETURN Statement
• GOTO Statement
• HEX$, OCT$ Functions
• Help Keys
• Help Path Command
• Help Path Dialog
• IF...THEN...ELSE Statement
• INKEY$ Function
• INP Function, OUT Statement
• INPUT$ Function
• INPUT, LINE INPUT Statements
• INSTR Function
• IOCTL Statement, IOCTL$ Function
• Identifier cannot end with %, &, !, #, $
• Identifier cannot include period
• Identifier too long
• Illegal function call
• Illegal in SUB, FUNCTION, or DEF FN
• Illegal in direct mode
• Illegal number
• Illegal outside of SUB, FUNCTION or DEF FN
• Illegal outside of SUB/FUNCTION
• Illegal outside of TYPE block
• Illegal placement of statements
• Index Command
• Input past end of file
• Insert diskette
• Internal error
• Invalid constant
• Invalid identifier
• KEY Statement (Assignment)
• KEY, ON KEY Statements (Event Trapping)
• KILL Statement
• Keyboard Scan Codes
• Keywords by Programming Task
• LBOUND, UBOUND Functions
• LCASE$, UCASE$ Functions
• LEFT$, RIGHT$ Functions
• LEN Function
• LET Statement
• LINE Statement
• LOC Function
• LOCATE Statement, CSRLIN, POS Functions
• LOCK, UNLOCK Statements
• LOF Function
• LOOP without DO
• LPOS Function
• LSET, RSET Statements
• LTRIM$, RTRIM$ Functions
• Label not defined
• MID$ Function and Statement
• MKSMBF$, MKDMBF$, CVSMBF, CVDMBF Functions
• MKn$, CVn Functions
• MOD Arithmetic Operator
• Match not found
• Module-level code too large
• Must be first statement on the line
• Must precede executables
• NAME Statement
• NEXT Keyword
• NEXT without FOR
• Name, String, and Number Limits
• New Command
• New FUNCTION Command
• New SUB Command
• New SUB or FUNCTION Dialog
• No RESUME
• No search string
• Numeric array illegal
• OFF Keyword - Different Uses
• ON ERROR Statement
• ON Keyword
• ON...GOSUB, ON...GOTO Statements
• OPEN COM Statement
• OPEN Statement
• OPEN Statement ACCESS Clause
• OPEN Statement Alternate Syntax
• OPEN Statement File Modes
• OPTION BASE Statement
• Open Command
• Open Dialog
• Operation requires disk
• Out of DATA
• Out of data space
• Out of memory
• Out of paper
• Out of stack space
• Out of string space
• Output Screen Command
• Overflow
• Overwrite existing file
• PAINT Statement
• PALETTE, PALETTE USING Statements
• PCOPY Statement
• PEEK Function, POKE Statement
• PEN Function
• PEN, ON PEN Statements
• PLAY Function
• PLAY Statement (Music)
• PLAY, ON PLAY Statements (Event Trapping)
• PMAP Function
• POINT Function
• PRESET, PSET Statements
• PRINT USING, LPRINT USING Statements
• PRINT, LPRINT Statements
• Parameter type mismatch
• Paste Command
• Path not found
• Path/file access error
• Permission denied
• Print Command
• Print Dialog
• Procedure Step Command
• Procedure and File Limits
• Procedure too large
• QBasic Command Line
• QBasic Disk-media error
• QBasic Environment Limits
• QBasic File not found
• QBasic Menu Bar
• QBasic Online Help Index
• QBasic Path not found condition
• QBasic cannot continue
• QBasic device I/O error
• QBasic device fault
• QBasic device unavailable
• QBasic disk full condition
• QBasic function not defined
• QBasic permission denied
• QBasic subprogram not defined
• QBasic too many files limit
• RANDOMIZE Statement, RND Function
• REM Statement
• RESET Statement
• RESUME Statement
• RESUME without error
• RETURN without GOSUB
• RUN Statement
• Rename across disks
• Repeat Last Find Command
• Restart Command
• Run and Debug Keys
• Run-Time Error Codes
• SCREEN Function
• SCREEN Statement
• SEEK Function and Statement
• SELECT CASE Statement
• SELECT without END SELECT
• SHARED, STATIC Statements
• SHELL Statement
• SLEEP Statement
• SOUND Statement
• SPACE$ Function
• SPC Function
• SQR Function
• STEP Keyword
• STICK Function
• STOP Statement
• STR$, VAL Function
• STRIG Function
• STRIG, ON STRIG Statements
• STRING$ Function
• SUB Statement
• SUB or FUNCTION required
• SUB/FUNCTION without END SUB/FUNCTION
• SUBs Command
• SUBs Command Dialog
• SWAP Statement
• SYSTEM Statement
• Save As Command
• Save As Dialog
• Save Command
• Screen Image Arrays and Compatibility
• Screen Modes
• Set Next Statement Command
• Shortcut Keys Summary
• Specify name
• Split Command
• Start Command
• Statement cannot precede SUB/FUNCTION definition
• Statement illegal in TYPE block
• Step Command
• String formula too complex
• Subscript out of range
• Survival Guide
• Syntax Checking Command
• Syntax Conventions
• Syntax error
• TAB Function
• TIME$ Function and Statement
• TIMER Function
• TIMER, ON TIMER Statements
• TO Keyword
• TRON, TROFF Statements
• TYPE Statement
• TYPE without END TYPE
• Table of Contents
• Toggle Breakpoint Command
• Too many files
• Topic Command
• Trace On Command
• Translation momentarily stopped
• Type mismatch
• Type more than 65535 bytes
• Type not defined
• Typed variable not allowed in expression
• USING Keyword
• Unsupported Keywords
• User-Generated Error
• Using Help
• Using Help Command
• Using Menus and Commands
• Using a Dialog Box
• VARPTR$ Function
• VARPTR, VARSEG Functions
• VIEW PRINT Statement
• VIEW Statement
• Variable required
• Version Differences
• View and Search Keys
• WAIT Statement
• WEND without WHILE
• WHILE without WEND
• WHILE...WEND Statement
• WIDTH Statements
• WINDOW Statement
• WRITE Statement
• Welcome to QBasic
• Wrong number of dimensions