ANSI BASIC  

This American National Standard specifies the form for and the interpretation of 
programs written in the BASIC programming languages for use on computers and 
information processing systems. Its purpose is to promote portability of BASIC 
programs for use on a variety of machines.

This standard was processed and approved for submittal to ANSI by the 
Accredited Standards Committee on Information Processing Systems, X3. 



  ACCESS


                                                          
  ABS(numeric-expression)

    Returns absolute value. Always a non negative number.

    Examples:
  
      100 PRINT ABS(42.3)

      100 VV=ABS(-6.124)



  ACOS(X)

    The arccosine of X in radians or degrees, where 0 < ACOS(X) < pi;

    X shall be in the range -1 < X < 1.



  AND



  ANGLE (X, Y)

    The angle in radians or degrees between the positive x-axis and the vector 
    joining the origin to the point with coordinates (X,Y), where -pi < ANGLE (X,Y) < pi . 
  
    X and Y shall not both be 0. 
  
    Note that counterclockwise is positive ( e . g . , ANGLE ( 1 , 1 ) = 45 degrees).



  AREA

    AREA STYLE 
    AREA STYLE INDEX  
    AREA COLOR
  
    Example:
  
    100 SET FILL AREA COLOUR INDEX



  ARITHMETIC

    Example:

     ARITHMETIC FIXED*8.2



  ARRAY



  ASIN(X)

    The arcsine of X in radians or degrees, where -pi/2 < ASIN(X) < pi/2; 
  
    X shall be in the range -1 < X < 1 .



  ASK
    The ASK statement is used to inquire about the current status of the file.
    ASK may be used to determine whether a particular device supports capabilities
  
    Example:
      100 OPEN #3: NAME "myfile"
      200 ASK #3: ACCESS AC$



  AT



  ATN(radian-expression)                                                       

    Returns trigonometric Arctangent - the angle (in radians) 
    whose tangent is x.
  
    The arctangent of X in radians or degrees, i.e., the angle whose tangent is X, 
    where -(pi/2) < ATN(X) < (pi/2).  
  



BASE



BEGIN



BREAK                                                     

  Causes the program to halt.                                                         



CALL



CASE



CAUSE



CEIL ( X )

  The smallest integer not less than X.



CELLS



CHAIN



CHOICE



CLEAR



CLIP



CLOSE                                                     

  Discontinues association between a file and a program and 
  optionally erases a file.  



COLLATE



COLOR



CONNECT



CONTINUE



COS (X)

  The cosine of X, where X is in radians or degrees.



DATA




DATE

  The current date in decimal form YYDDD, where YY are the last two digits of the 
  year and DDD is the ordinal number of the current day of the year (e.g., the 
  value of DATE on May 9, 1977 was 77129). If there is no calendar available, then 
  the value of DATE shall be -1.



DATUM



DEBUG



DRAW 



END

  Terminates program execution.



EOF(numeric-expression)

  Returns the end-of-file condition of the specified file.



EXP ( X )

  The exponential of X, i . e . , the value of the base of natural 
  logarithms (e = 2.71828...) raised to the power X; if EXP(X) is 
  less than machine infinites¬ imal, then its value shall be replaced by zero.



GET



GOSUB                                                     



GOTO





IF                                                        



INPUT                                                     




LET

  Examples

   LET P = 3.14159
   LET A(X, 3 ) = SIN ( X ) *Y + 1 
   LET A, Y ( I ) , Z = I + 1 
   LET T ( I , J ) , I , J = I + J



LSET                                                      



MAXNUM

  The largest finite positive number representable and manipulable by the implementation; 
  implementationdefined. MAXNUM may represent different numbers for different arithmetic 
  options.



MID$                                                      
  To replace a portion of one string with another string  



MIN ( X, Y)

  The smaller (algebraically) of X and Y.



MOD ( X , Y)

  X modulo Y, i.e., X-Y*INT(X/Y) . Y shall not equal zero .



OPEN                                                      



OUT                                                       



POKE                                                      



  PRINT   

    Examples:

      PRINT X PRINT X, Y 

      PRINT X, Y, Z,

      PRINT ,,,X 

      PRINT

      PRINT "X EQUALS", 10

      PRINT X; ( Y+Z ) / 2

      PRINT TAB (10); A$ ; "IS DONE.




READ                                                      



REM



  SET

    Examples:
      SET MARGIN 120

      SET ZONEWIDTH 20





STOP