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6 changes: 3 additions & 3 deletions book.md
Original file line number Diff line number Diff line change
Expand Up @@ -1225,9 +1225,9 @@ feature, supported only in AArch64 state, that can be used to mitigate code
reuse attacks.

Pointer Authentication computes a pointer _signature_ for a given address,
called a [Pointer Authentication Code (PAC)]{.index}, see @fig:pauth-sign-auth.
The PAC code is stored in the upper bits of the pointer which are otherwise
unused.
called a [Pointer Authentication Code (PAC)]{.index}, see figure
@fig:pauth-sign-auth. The PAC code is stored in the upper bits of the pointer
which are otherwise unused.

A pointer with a PAC code in the upper bits is called a _[signed
pointer]{.index}_. A non-signed pointer is called a _[raw pointer]{.index}_.
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