Sentence:  Deleuze and Guattari (1987: 9) also recognise that although powerful sign systems may dominate or <WSD>overcode</WSD> a multiplicity, such <WSD>overcoding</WSD> will inevitably be temporary as 'multiplicities are defined by the outside: by the abstract line, the line of flight or deterritorialisation according to which they change in nature'. 
Meaning of the word marked with <WSD> tags:  To act as an overcode for.