When making lists of titles, it's common to write them with any leading article moved to the end (e.g. Lord of the Rings, The
) in order for sorting mechanisms to think that the title begins with L and not T.
Some sorting mechanisms know how to ignore any leading articles automatically, and so can order the titles appropriately even if the article does appear at the beginning.
Is there an official name for the type of sorting that ignores the leading article?