[GWN] setting files to read only

[don bishop]

I don't think it can be done, but maybe someone can prove me wrong.
I have a folder containing several files and I want to make all files in 
that folder read only.  Short of changing the attribute of each file, is 
there a quick way to set all files in the folder to read-only?

This is for the braillesense plus.

Thanks,

Don