I/O errors are often hard to see. They appear a white text somewhere
on your screen below wherever the cursor was positioned at the time of the
error.
They look a lot like Run-time Error messages except that
the first line says I/O Error xx, PC=nnnn
They are usually generated because some sort of input/output error.
This means that the system was trying to send something to or get something
from a file or output device like a printer.
Run-Time errors are often hard to see. They appear a white text somewhere
on your screen below wherever the cursor was positioned at the time of the
error.
They look a lot like I/O Error messages except that the first line says
Run-time Error xx , PC=nnnn
They are usually generated because of a math error, a memory error or
because some part of the program that was expected to be there was not.
