open switch

from Jargon File (4.4.4, 14 Aug 2003)
open switch
 n.

   [IBM: prob.: from railroading] An unresolved question, issue, or
   problem.
from The Free On-line Dictionary of Computing (8 July 2008)
open switch

   ({IBM}, probably from railways) An unresolved question, issue,
   or problem.

   [{Jargon File}]

   (1994-11-11)
antiflux / dictionary / open switch
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