If I edit a hidden file in Notepad, I can save changes. Editing and then attempting to save that same file in Wordpad causes an "Access to C:...\file.txt" was denied" dialog to pop up.
In my very specific scenario, I'm frustrated that I can't hide my .ReSharper.user files. If I do, the next time I close down Visual Studio, ReSharper complains that it can't save my settings.
Argh! Why are Windows programs inconsistent with being able to write to hidden files? Why does the hidden attribute of a file affect its writability at all?