Calling a File (a matrix with unknown size) inside of the UEL and COMMON variables

Hi everybody,

I'm almost new in FORTRAN and UEL. I have two questions:

1- Inside of the UEL I have to open and read a file which contain a matrix with unknown size. Without defining the size I can't open and read the file. What should I do to over come this?

2- I'm trying to define some of the variables as COMMON variables (for some reasons I can't use module). I have a variable (let's say 'A') which has been defined as allocatable variable. Some how I couldn't define it as COMMON variable. What should I do?

Thanks in advance,

Best Regards,