1 MAT
 The MAT statement lets you implicitly create  and  manipulate  one-  and
 two-dimensional  arrays.  You can use the MAT statement to assign values
 to array elements, or to redimension  a  previously  dimensioned  array.
 You   can   also   perform   matrix   arithmetic   operations   such  as
 multiplication, addition, and subtraction, and other  matrix  operations
 such as transposing and inverting matrices.

 Examples:

 MAT First_array = ZER
 MAT String_array = NUL$
 MAT A = B + C
 MAT C = (55.2) * First_array

2 Syntax

 Initialization (Numeric):

                     { CON }
     MAT num-array = { IDN } [ ( int-exp1 [, int-exp2 ] ) ]
                     { ZER }

 Initialization (String):

     MAT str-array = NUL$ [ ( int-exp1 [, int-exp2 ] ) ]

 Array Arithmetic:

                                 [ { + }            ]
     MAT num-array1 = num-array2 [ { - } num-array3 ]
                                 [ { * }            ]

     MAT num-array1 = num-array2 * num-array3 [* num-array4] ,...

 Scalar Multiplication:

     MAT num-array4 = ( num-exp ) * num-array5

 Inversion and Transposition:

                      { TRN }
     MAT num-array6 = { INV } ( num-array7 )

2 INPUT
 The  MAT  INPUT  statement  assigns  values   from   a   terminal   or
 terminal-format file to array elements.

 Example

 MAT INPUT Emp_name$(10,10)

3 Syntax

     MAT INPUT [ chnl-exp, ] { array [ (int-exp1 [,int-exp2]) ] },...

2 LINPUT
 The MAT LINPUT statement receives  string  data  from  a  terminal  or
 terminal-format file and assigns it to string array elements.

 Example

 MAT LINPUT Time_card$(10%)

3 Syntax

     MAT LINPUT [chnl-exp,] {  str-array  [  (int-exp1  [,int-exp2])  ]
     },...

2 PRINT
 The  MAT  PRINT  statement  prints  the  contents   of   a   one-   or
 two-dimensional  array  on  your terminal or assigns the value of each
 array element to a record in a terminal-format file.

 Example

 MAT PRINT Arr1(5,5)

3 Syntax

     MAT PRINT [chnl-exp,] {array [(int-exp1 [,int-exp2])] [{ , }]}...
                                                            { ; }

2 READ
 The MAT READ statement assigns values from DATA  statements  to  array
 elements.

 Example

 MAT READ Animal$(2,2)
 DATA CAT,DOG,GOAT,RABBIT

3 Syntax

     MAT READ { array [ ( int-exp1 [, int-exp2 ] ) ] },...