This resource is control the look and feel for your current session. To be honest, this is to implement, rather than claim righteousness on; making sites easy to use for differing people. As the range of options increases, I will express this in more needs centric vocabulary (i.e. expressed in medical terms). I just hope people spot it and use it. This is a serious site, so you may not have comic sans.
If you tick the 'remember' box, this will write a cookie to your local machine, with your current selections. This does not track or identify you. If you don't tick it, your settings are only remembered for the duration of the session. You can easily reapply the options next time you visit.