I looked this up a few months ago and what I discovered was that legal
file names can consist of spaces and visible UTF8 characters and
only characters which are used for file (system) syntax are restricted
from becoming part of the file syntax. There is one other exception
to this and that is
Here is some hope!
The solution is a grass-roots solution.
To counter central technology, we will use dispersed and independent
technology. If and when it becomes necessary or expedient, a community
WiFi network is entirely possible. Most people have routers which can
sustain a power input of