Sat, 09 Apr 2016 14:11:31 +0200 wenzelm tuned signature -- closer to Exn.Interrupt.expose in Scala;
Sat, 09 Apr 2016 14:00:23 +0200 wenzelm clarified bootstrap;
Sat, 09 Apr 2016 13:28:32 +0200 wenzelm clarified context;
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