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Electives may be chosen from a variety of departments and programs . If the other parts of the query predicate are very selective , however , a functional implementation of UNDER_PATH may be chosen that will walk back up the repository . The codepoints may be chosen from a set of mandatory values defined later in this document , from a set of recommended values to be defined in future documents , or may have purely local meaning . Softer foods may be chosen when chewing function is impaired due to one or more oral health problems . The spinning Omphalos above the fire will welcome you to the sacred space , where through ritual preparation you may be chosen to approach the oracle with your question .