Example

> matrix_name = rand(2,2)
 matrix_name =
        1      0.647  
    0.975      0.333  
> scal452 = 2.3456123
 scal452 =
     2.35
> scalC = pi + exp(1)*1j
 scalC =
     3.14 + 2.72i
> another_matrix = rand(3,1) + rand(3,1)*1j
 another_matrix =
        0.0369 + 0.0847i
          0.162 + 0.204i
          0.665 + 0.167i
> str = "some test text"
 str =
some test text
> DerList = << str; scalC; another_matrix >> DerList =
   1            2            3         
> write("for_later", matrix_name);
> system("more for_later");
# matrix : matrix_name no_of_rows: 2 no_of_cols: 2 REAL
# matrix columns 1 thru 2
 0.9999996442347765       0.6474838890135288      
 0.9745195945724845       0.3330855811946094      
> write("_nother_file", scal452, matrix_name);
> system("more _nother_file");
# scalar : scal452
 2.3456123                0                       
# matrix : matrix_name no_of_rows: 2 no_of_cols: 2 REAL
# matrix columns 1 thru 2
 0.9999996442347765       0.6474838890135288      
 0.9745195945724845       0.3330855811946094      
> write("for_later", scalC, str, DerList, another_matrix);
> system("more for_later");
# matrix : matrix_name no_of_rows: 2 no_of_cols: 2 REAL
# matrix columns 1 thru 2
 0.9999996442347765       0.6474838890135288      
 0.9745195945724845       0.3330855811946094      
# scalar : scalC
 3.141592653589793        2.718281828459045       
# string : str Length : 14
some test text
# list : DerList no_of_elements: 3 
# string : 1 Length : 14
some test text
# scalar : 2
 3.141592653589793        2.718281828459045       
# matrix : 3 no_of_rows: 3 no_of_cols: 1 COMPLEX
# matrix columns 1 thru 1
 0.03694454254582524      0.08467286918312311     
 0.1617118660360575       0.2041363911703229      
 0.6646450059488416       0.1673069256357849      
# matrix : another_matrix no_of_rows: 3 no_of_cols: 1 COMPLEX
# matrix columns 1 thru 1
 0.03694454254582524      0.08467286918312311     
 0.1617118660360575       0.2041363911703229      
 0.6646450059488416       0.1673069256357849 
> close("_nother_file");
> close("for_later");
> write("for_later", another_matrix);
> system("more for_later");
# matrix : another_matrix no_of_rows: 3 no_of_cols: 1 COMPLEX
# matrix columns 1 thru 1
 0.03694454254582524      0.08467286918312311     
 0.1617118660360575       0.2041363911703229      
 0.6646450059488416       0.1673069256357849