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@ -20,7 +20,10 @@ Entry: # just exit; can't test _write just yet
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# - 'ref' which is used to point to a unique element, because machine
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# - 'ref' which is used to point to a unique element, because machine
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# code can't store large types in registers.
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# code can't store large types in registers.
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# - 'handle' which can point to a heap allocation, different heap allocations
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# - 'handle' which can point to a heap allocation, different heap allocations
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# at different times, or even at times nothing at all.
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# at different times, or even at times nothing at all. (Later on handles
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# will turn into fat pointers to enable safe reclamation. But in unsafe
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# levels we'll just never reclaim them, and handles will be word-sized just
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# like refs.)
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#
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#
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# The type 'address' can be obtained from either a ref or handle, but it can
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# The type 'address' can be obtained from either a ref or handle, but it can
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# only be stored on the stack (say to pass objects by reference).
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# only be stored on the stack (say to pass objects by reference).
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