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  • $\begingroup$ Nice question. Of the top of my head I can think of a way for the particular "pause" case, but I'm sure that serves no purpose for you. Hummm $\endgroup$ Commented Oct 15, 2012 at 16:50
  • $\begingroup$ @NasserM.Abbasi it's possible to make a pause controlled by another variable, that ends when you set it $\endgroup$ Commented Oct 15, 2012 at 22:37