The present invention provides solutions to the potential undesirable effects the insertion and removal of information elements and documents may have on axes of elements using a collation function and collation units and further allows for displaying the elements with a first layout until the number of elements to be displayed in the collation unit exceeds a maximum number of elements displayable with the first layout, the elements displayed in the collation unit being displayed with a second layout when the number of elements to be displayed in the collation unit exceeds the number of elements displayable with the first layout. The invention can be effectuated as a method, a device and an apparatus carrying out the method described herein.