NDOF Fit as shortcut key?

Menus typically list the shortcut keys to the right of the menu item. There is one in the View menu for “View Selected” that I find quite handy as it lets me quickly zoom the viewport on a particular object for editing, but its shortcut is listed as “NDOF Fit” … What does this mean?

Is there perhaps another way of quickly getting up close to an object via a shortcut?

There are 3 different of shortcuts for ‘View Selected’ in the 3d view. It can only show 1 shortcut in the menu which happens to be the one for the 3D Mouse. You can delete it in the User Preferences / Input if needed


much appreciated