How to show cursor in ofSetFullscreen() mode?

In ~/examples/windowing/windowExample the user can switch between full size screen and a smaller window. In the update() section, the window mode is tested and if in full screen mode, ofHideCursor() is called. Why?

I am interested because in my own little project I use the mouse cursor position to trigger a graphic event in a not full screen window. If I simply add ofSetFullscreen() and ofShowCursor() to setup() I get a nice fullscreen display but no mouse cursor.