A tangible machine-readable media having encoded machine-executable instructions adapted to provide a method for displaying arrays of user-selectable elements is described, the method comprising: receiving instructions providing data about a geographical and/or celestial position; and displaying an array of user-selectable elements, the array of user-selectable elements being adapted to group user-selectable elements related to the position. A system and an interface providing position related array of user-selectable elements is also described. An array of user-selectable elements separating user-selectable elements in portions of time and displaying advertising is similarly disclosed therein.