Niederst indicates one such situation by stating: "Unfortunately, XML software thinks of comments as unimportant information and may simply remove the comments from a document before processing it.
Niederst viitab ühele sellisele juhtumile, öeldes: "Kahjuks võib XML tarkvara kommentaare ebaoluliseks infoks pidada ja need dokumendist kustutada enne selle töötlemist.