"Brian Howie" wrote in message
...
In message , Richard
writes

Thing is, I cannot understand why these files are not read only. Whether
copied from CD or downloaded.

Because you might want to mess around with them. :-)

You mess but you do not alter the original.

When editing nec input files you have got to be careful not to save because
then the original file is not original anymore.

I thought it might be better to download files that come write protected
from the start.