Extended Color Basic Summary
------------------------------------------------------------------------

Statements
   AUDIO ON
   AUDIO OFF
   CIRCLE(x,y),r,c,hw,start,end
   CLEAR n,h               Reserve n bytes for strings, and
                           use only up to address h for BASIC
   CLOAD
   CLOAD name
   CLOADM
   CLOADM name
   CLOADM name,offset
   CLOSE d
   CLS c
   COLOR (fg,bg)
   CONT
   CSAVE name
   CSAVE name,A
   CSAVEM name,a1,a2,ax
   DATA
   DEF FN
   DEFUSERn = addr
   DEL
   DIM
   DLOAD
   DRAW string
   EDIT linenumber
   END
   EXEC
   EXEC address
   FOR .. TO .. STEP / NEXT
   GET (start)-(end),dest,G
   GOSUB linenumber
   GOTO linenumber
   IF .. THEN .. ELSE
   INPUT
   INPUT #-1
   LET
   LIST
   LLIST
   LINE (x1,y1)-(x2,y2),PSET,BF
   LINE (x1,y1)-(x2,y2),PRESET,BF
   LINE INPUT
   MOTOR ON
   MOTOR OFF
   NEW
   ON .. GOSUB
   ON .. GOTO
   OPEN m,#d,filename
   PAINT (x,y),c,b
   PCLEAR n
   PCLS c
   PCOPY
   PLAY string
   PMODE mode,startpage
   POKE addr,value         Save value at address addr, where
                           0 <= addr <= 65535, and 0 <= value <= 255
   PRESET (x,y)
   PRINT
   PRINT #-1
   PRINT #-2
   PRINT TAB
   PRINT USING
   PRINT @location
   PSET (x,y,c)
   PUT (start)-(end),source,action
   READ
   REM
   RENUM newline,startline,increment
   RESET (x,y)
   RESTORE
   RETURN
   RUN
   SCREEN screentype,colorset
   SET (x,y,c)
   SKIPF
   SKIPF name
   SOUND tone,duration
   STOP
   TROFF
   TRON

Functions

   ABS(num)
   ASC(str)
   ATN(num)
   CHR$(charcode)
   COS(num)
   EOF(f)
   EXP(num)
   FIX(num)
   HEX$(num)
   INKEY$
   INSTR(first,str,substr)
   INT(num)
   JOYSTK(j)                Reads joystick value j:
                                0=left_horiz  1=left_vert
                                2=right_horiz 3=right_vert
   LEFT$(str,length)
   LEN(str)
   LOG(num)
   MEM
   MID$(str,first,len)
   PEEK(address)
   POINT(x,y)
   POS(dev)
   PPOINT(x,y)
   RIGHT$(str,length)
   SGN(num)
   SIN(num)
   STRING$(length,charcode)
   STRING$(length,str)
   STR$(num)
   SQR(num)
   TAN(num)
   TIMER
   USRn(num)               Calls the machine-language subroutine whose
                           address was defined by DEFUSRn, where 0 <= n <= 9
   VAL(str)
   VARPTR(var)

Operators
   ^               Exponentiation
   -,+             Unary negative, positive
   *,/             Multiplication, division
   +,-             Addition and concatenation, subtraction
   <,>,=,<=,>=,<>  Relational tests
   NOT, AND, OR    Logical operators

Error messages
   Abbrev.  Explanation
     /0     Division by zero
     AO     File already open
     BS     Bad subscript - out of range
     CN     Cannot continue
     DD     Redimensioned array
     DN     Device number error
     DS     Direct statement in file
     FC     Illegal function call
     FD     Bad file data
     FM     Bad file mode
     ID     Illegal direct
     IE     Input past end of file
     I/O    Input/Output error
     LS     String too long
     NF     NEXT without FOR
     NO     File not open
     OD     Out of data
     OM     Out of memory
     OS     Out of string space
     OV     Overflow
     RG     RETURN without GOSUB
     SN     Syntax error
     ST     String formula too complex
     TM     Type mismatch
     UL     Undefined line number