Sentence:  The advantages of the RHA method are that it is flexible and can deal with all variants of phoscorites, including diopside and phlogopite-bearing varieties, as well as the continuous series through to carbonatite (Table 2.4) and other related rocks. It gives a measure of complexity of composition and of minor components in the entropy and <WSD>anentropy</WSD> values. 
Meaning of the word marked with <WSD> tags:  (uncountable) A measure of the simplicity or purity of a distribution.