 In modern Dutch the two parts of a compound are typically linked by either -e-, -en- or -s- and historically these linkers descend from the genitive endings of the old case system.Particularly the question when to use -e- or -en- became a source of a plethora of spelling errors, because the system that produced the forms was no longer understood.In 1995 and 2006 spelling changes were adopted that introduced new rules that abandoned any relationship with the historical development of the word.