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text.txt

enqueueMark(obj|string)
  Add an object to the queue of objects to mark at the beginning every GC. (Note
  that the objects will actually be marked at the beginning of every slice, but
  after the first slice they will already be marked so nothing will happen.)
  
  Instead of an object, a few magic strings may be used:
    'yield' - cause the current marking slice to end, as if the mark budget were
      exceeded.
    'enter-weak-marking-mode' - divide the list into two segments. The items after
      this string will not be marked until we enter weak marking mode. Note that weak
      marking mode may be entered zero or multiple times for one GC.
    'abort-weak-marking-mode' - same as above, but then abort weak marking to fall back
      on the old iterative marking code path.
    'drain' - fully drain the mark stack before continuing.
    'set-color-black' - force everything following in the mark queue to be marked black.
    'set-color-gray' - continue with the regular GC until gray marking is possible, then force
       everything following in the mark queue to be marked gray.
    'unset-color' - stop forcing the mark color.