text: The patterns formed in dewetting processes have attracted strong interest since Reiter analysed the 
  
  process quantitatively in the early nineties. In these experiments, that proved to be a paradigm in 
  
  our understanding of dewetting, a uniform thin ﬁlm of polystyrene (tens of nanometers thick) is 
  
  deposited on a ﬂat silicon oxide substrate is brought above the glass transition temperature. The 
  
  ﬁlm ruptures in several places, forming holes which subsequently grow, competing for space. As a 
  
  result, a random polygonal network of liquid rims emerges. The rims may further decay into lines 
  
  of small drops due to a Rayleigh-type instability [1–3]. The related problems of retracting contact 
  
  lines on partially wetting substrates and the opening of single holes in rather thick ﬁlms have also 
  
  been studied [4, 5]. 
  
  Subsequent work has mainly focused on many different aspects of the dewetting process for simple 
  
  non-volatile liquids and polymers (for reviews see Refs. [6–8]). All stages of the dewetting of a 
  
  ﬁlm are studied: the initial ﬁlm rupture via nucleation or a surface instability (called spinodal 
  
  dewetting) [1, 9–13], the growth process of individual holes [14–16], the evolution of the resulting 