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Index: lib/libc/sys/mprotect.2
===================================================================
--- lib/libc/sys/mprotect.2
+++ lib/libc/sys/mprotect.2
@@ -47,12 +47,14 @@
changes the specified pages to have protection
.Fa prot .
.Pp
-Currently these protection bits are known,
-which can be combined, OR'd together:
+The
+.Fa prot
+argument shall be
+.Dv PROT_NONE
+(No permissions at all)
+or the bitwise OR of one or more of the following values:
.Pp
.Bl -tag -width ".Dv PROT_WRITE" -compact
-.It Dv PROT_NONE
-No permissions at all.
.It Dv PROT_READ
The pages can be read.
.It Dv PROT_WRITE
@@ -61,8 +63,11 @@
The pages can be executed.
.El
.Pp
-In addition to these protection flags,
+In addition to these standard protection flags,
+the
.Fx
+implementation of
+.Fn mprotect
provides the ability to set the maximum protection of a region
(which prevents
.Nm

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