referrals is incorrectly written and should be written as branches, deviations. being its meaning:
Lines, roads or branches that come out of a major. Branches, deviations. In Linguistics is a procedure of formation of words that can extend a number of meanings, formed from a major, root or lexeme and its family of derived words. Referrals may have root in a noun or adjective, unlike Flex, which will always be a verb.
