Hi, There some fountain pens that I have noticed their nibs have a hole in the base of the nib, on the opposite end to the tines and the tipping material. See figure below: http://i1376.photobucket.com/albums/ah12/phzervas/31F9046E-38A4-4ED3-9E99-E62F82501738_zps5pundsne.jpg Does anyone know what is the purpose of such hole? It does not appear to correspond to an similar size projection of the feed, at least not in my fountain pen. In such a case it could be used as an antirotational feature that holds the nib and feed together. Is it possible that such a hole works as an ink reservoir and makes the pen write any wetter? If so, would adding such a hole in other nibs, that do not possess such a feature, make them wetter too? Does such a hole prevent the ink in the nibs from drying out too fast? Any input wuld be highly appreciated. Thanks. Photios