Index: lib/msun/man/acosh.3
===================================================================
--- lib/msun/man/acosh.3
+++ lib/msun/man/acosh.3
@@ -55,13 +55,13 @@
 functions compute the inverse hyperbolic cosine
 of the real
 argument
-.Ar x .
+.Fa x .
 For a discussion of error due to roundoff, see
 .Xr math 3 .
 .Sh RETURN VALUES
 These functions
 return the inverse hyperbolic cosine of
-.Ar x .
+.Fa x .
 If the argument is less than 1,
 .Fn acosh
 raises an invalid exception and returns an \*(Na.
Index: lib/msun/man/asinh.3
===================================================================
--- lib/msun/man/asinh.3
+++ lib/msun/man/asinh.3
@@ -55,13 +55,13 @@
 functions compute the inverse hyperbolic sine
 of the real
 argument
-.Ar x .
+.Fa x .
 For a discussion of error due to roundoff, see
 .Xr math 3 .
 .Sh RETURN VALUES
 These functions
 return the inverse hyperbolic sine of
-.Ar x .
+.Fa x .
 .Sh SEE ALSO
 .Xr acosh 3 ,
 .Xr atanh 3 ,
Index: lib/msun/man/atan2.3
===================================================================
--- lib/msun/man/atan2.3
+++ lib/msun/man/atan2.3
@@ -105,12 +105,12 @@
 .It Fn atan2 y x No := Ta
 .Fn atan y/x Ta
 if
-.Ar x
+.Fa x
 > 0,
 .It Ta sign( Ns Ar y Ns )*(\*(Pi -
 .Fn atan "\*(Bay/x\*(Ba" ) Ta
 if
-.Ar x
+.Fa x
 < 0,
 .It Ta
 .No 0 Ta
@@ -118,9 +118,9 @@
 .It Ta
 .Pf sign( Ar y Ns )*\*(Pi/2 Ta
 if
-.Ar x
+.Fa x
 = 0 \(!=
-.Ar y .
+.Fa y .
 .El
 .Sh NOTES
 The function
Index: lib/msun/man/atanh.3
===================================================================
--- lib/msun/man/atanh.3
+++ lib/msun/man/atanh.3
@@ -55,18 +55,18 @@
 functions compute the inverse hyperbolic tangent
 of the real
 argument
-.Ar x .
+.Fa x .
 For a discussion of error due to roundoff, see
 .Xr math 3 .
 .Sh RETURN VALUES
 These functions
 return the inverse hyperbolic tangent of
-.Ar x
+.Fa x
 if successful.
 If the argument has absolute value 1, a divide-by-zero exception
 is raised and an infinity is returned.
 If
-.Ar |x|
+.Fa |x|
 > 1, an invalid exception is raised and an \*(Na is returned.
 .Sh SEE ALSO
 .Xr acosh 3 ,
Index: lib/msun/man/exp.3
===================================================================
--- lib/msun/man/exp.3
+++ lib/msun/man/exp.3
@@ -108,9 +108,9 @@
 .Fn powl
 functions compute the value
 of
-.Ar x
+.Fa x
 to the exponent
-.Ar y .
+.Fa y .
 .Sh ERROR (due to Roundoff etc.)
 The values of
 .Fn exp 0 ,
Index: lib/msun/man/sincos.3
===================================================================
--- lib/msun/man/sincos.3
+++ lib/msun/man/sincos.3
@@ -67,9 +67,9 @@
 and
 .Fn sincosl ,
 the memory pointed to by
-.Ar "*s"
+.Fa "*s"
 and
-.Ar "*c"
+.Fa "*c"
 are assigned the values of sine and cosine, respectively.
 .Sh SEE ALSO
 .Xr cos 3 ,
Index: lib/msun/man/sqrt.3
===================================================================
--- lib/msun/man/sqrt.3
+++ lib/msun/man/sqrt.3
@@ -63,7 +63,7 @@
 .Fn cbrtl
 functions compute
 the cube root of
-.Ar x .
+.Fa x .
 .Pp
 The
 .Fn sqrt ,
@@ -72,7 +72,7 @@
 .Fn sqrtl
 functions compute the
 non-negative square root of
-.Ar x .
+.Fa x .
 .Sh RETURN VALUES
 The
 .Fn cbrt ,