an Entity references as follows:
*U* â ´ unit ... This element marks the interpreted position of a unit symbol, such as $, # (British pounds), FFr (French francs), C$, US$, HK$, A$, M$, S$, and NZ$. It may also appear after % or even cents, when convenient. See section 11 [Modification of NP] for more details on the use of *U*. ... In general, *U* is placed where the word corresponding to the symbol would appear in the string if the text were read aloud. One notable exception is in certain hyphenated compound adjectives, such as a $5-a-share increase (spoken: â ¼A five dollar a share increaseâ ½). Here, the bracketing will usually not reflect the spoken order, with *U* placed as the last element in the ADJP: (NP a (ADJP $ 5-a-share *U*) increase) Sometimes, this type may lack the *U* entirely. (Bies et al. 1995)