Replace -1 with \-1.
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@ -1,4 +1,4 @@
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.\" $NetBSD: sem_destroy.3,v 1.1 2003/01/21 02:24:41 christos Exp $
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.\" $NetBSD: sem_destroy.3,v 1.2 2003/01/21 11:47:32 wiz Exp $
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.\"
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.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>.
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.\" All rights reserved.
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@ -75,7 +75,7 @@ POSIX does not define the behavior of
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.Fn sem_destroy
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if called while there are threads blocked on
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.Fa sem ,
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but this implementation is guaranteed to return -1 and set
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but this implementation is guaranteed to return \-1 and set
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.Va errno
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to
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.Er EBUSY
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@ -1,4 +1,4 @@
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.\" $NetBSD: sem_open.3,v 1.1 2003/01/21 02:24:41 christos Exp $
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.\" $NetBSD: sem_open.3,v 1.2 2003/01/21 11:47:32 wiz Exp $
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.\"
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.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>.
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.\" All rights reserved.
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@ -61,7 +61,7 @@ to indicate an error.
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.Fn sem_close
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and
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.Fn sem_unlink
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return -1 and set
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return \-1 and set
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.Va errno
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to indicate an error.
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.Sh ERRORS
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