 Usage:  err = dlcall ({handle}, n, list {, opt})  
 
 Input:

  handle                 scalar (optional), handle of the dll to load the function from. 
                         &nl; If it is omitted in all dlls are searched for the function 
                         
  n                      string, name of function 
                         
  list                   list of arrays, arguments for the function 
                         
  opt                    optional list of arrays, which describes the arguments 
                         for the function 
                         &val; opt.byrow 
                         &means; decides how the arguments will be given to function 
                         &val; opt.type 
                         &means; decides as which type the arguments will be given to function 
                         
 Output:

  err                    scalar, result from the function 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
