-stack should only exist within vm86 mode itself.)
-.SH "CONFORMING TO"
-This call is specific to Linux on Intel processors, and should not be
-used in programs intended to be portable.
+stack should exist only within vm86 mode itself.)
+.SH CONFORMING TO
+This call is specific to Linux on 32-bit Intel processors,
+and should not be used in programs intended to be portable.