Doug..
         I am not very familiar with all the different specs out there
  in the world, but I have worked with the Mil specs and I am getting to 
  use the IPC specs. Here is what I beleive to be published. Mil-Std-275
  and Mil-C-28809 both reference jumpers (designed-in-jumpers and repair/
  modification jumpers). IPC-D-275 and IPC-2221 (soon to replace 275)
  references only designed-in-jumpers. I do not know if the IPC has a
  repair/modification spec, maybe a Mike Buetow/Dave Bergman or someone
  else at the IPC could comment.
         Here is what we do on our Military products for changes/repairs/
  modifications to multilayer pwb surfaces/assemblies: We add 36 awg magnet
  wire, typical for standard 5v digital designs, and isolate by cutting or
  isolating component leads per the Mil specs. If we reach a specified 
  number of jumpers, again per the Mil specs, we are contractually obligated
  to redesign the surface and incorporate all outstanding changes/mods/repairs 
  into the new design. Hope this helps. If you would like, feel free to
  contact me for further questions/comments. Have a good day.
                                           Regards,
                                                     Bob Vanech

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