[...] the special clitics, we take to be those which appear in a position where the syntax would not regularly put them. Like the simple clitics, they form part of a phonological word with something else; but their location must be due to something other than the language's normal sentential syntax.
- Anderson (2004), a pag.28

[...] there could be two sorts of phrasal affix, corresponding to the difference between derivational and inflectional morphology. One set of special clitics (the derivational ones) would correspond to the introduction of changes in the semantic properties of the phrase they occurr in.
- Anderson (2004), a pag.42