Warning: the following STR may harm your display, don't try it with anything under 30 ms or so.

1. braille settings.
2. set cursor blink rate to 1 millisecond.
3. press okay.
   Your display's cursor will go nuts. Can this be limited to something like 150 ms to prevent damage to the pins being forced up and down so rapidly? I haven't seen damage ever, but accidentally did this, and it didn't sound good for the display.