This parameter controls the directory where frame-based on-the-fly pages
will be built during static builds. This allows a different presentation
for frames and non-frames catalog incarnations.
It is not an absolute path, but is relative to StaticDir. Default is
framefly.
A StaticDir of /var/www/htdocs/simple/pages would yield a FrameLinkDir location of
/var/www/htdocs/simple/pages/framefly.