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docs: forwarding pointer tag

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Jonathan Paprocki 2023-06-22 16:24:26 -04:00
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docs/stack.md
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@ -33,6 +33,8 @@ When an indirect atom is copied from one stack frame to another, its size is rep
forwarding pointer. When a cell is copied from one stack frame to another, its
head is replaced with a forwarding pointer.
The tag for a forwarding pointer is 111.
## Memory Layout
Computation proceeds in a memory arena, using two stacks growing towards each other from opposite ends.