By law, children born as Hungarian citizens may bear no more than two surnames (most people have only one; those who have two may hyphenate them). They can also have only one or two given names (religious names not included since they are not official, see above). Given names can be chosen by the parents from an official list of several thousand names (technically, one list for each gender). If the intended name is not on the list, the parents need to apply for approval. Applications are considered by the Research Institute for Linguistics of the Hungarian Academy of Sciences following a set of principles. Thus, names are approved if they are not derogatory or overly diminutive, can be written and pronounced easily, can be recognised as either male or female, etc. Approved names expand the official list, the newest edition of which is regularly published. A lot of recent additions are foreign names, which, however, must be spelled following Hungarian phonetics, e.g. "Jennifer" becomes "Dzsenifer" or "Joe" becomes "Dzsó".