116 files changed, 120 insertions, 120 deletions

diff --git a/lib/libc/gen/clock.3 b/lib/libc/gen/clock.3
index 72f2b045a8ff..a3b6c9201d86 100644
--- a/lib/libc/gen/clock.3
+++ b/lib/libc/gen/clock.3
@@ -68,4 +68,4 @@ case the return value is \-1.
 The
 .Fn clock
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/gen/frexp.3 b/lib/libc/gen/frexp.3
index 959df844db59..b903182d42e8 100644
--- a/lib/libc/gen/frexp.3
+++ b/lib/libc/gen/frexp.3
@@ -85,4 +85,4 @@ is zero, both parts of the result are zero.
 The
 .Fn frexp
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/gen/getcwd.3 b/lib/libc/gen/getcwd.3
index 4e08fab51bdf..b81740e419e5 100644
--- a/lib/libc/gen/getcwd.3
+++ b/lib/libc/gen/getcwd.3
@@ -138,7 +138,7 @@ The
 .Fn getcwd
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 The ability to specify a
 .Dv NULL
 pointer and have
diff --git a/lib/libc/gen/ldexp.3 b/lib/libc/gen/ldexp.3
index e340d0fd31fb..e8fe770abc6a 100644
--- a/lib/libc/gen/ldexp.3
+++ b/lib/libc/gen/ldexp.3
@@ -77,4 +77,4 @@ is returned.
 The
 .Fn ldexp
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/gen/modf.3 b/lib/libc/gen/modf.3
index f403315d28f1..b60d060fc2ff 100644
--- a/lib/libc/gen/modf.3
+++ b/lib/libc/gen/modf.3
@@ -72,4 +72,4 @@ function returns the signed fractional part of
 The
 .Fn modf
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/gen/raise.3 b/lib/libc/gen/raise.3
index 793759e117e8..2177fa4a0c2e 100644
--- a/lib/libc/gen/raise.3
+++ b/lib/libc/gen/raise.3
@@ -77,4 +77,4 @@ The
 .Fn raise
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/gen/setjmp.3 b/lib/libc/gen/setjmp.3
index 54b6c598ece7..1c4800c2d3bb 100644
--- a/lib/libc/gen/setjmp.3
+++ b/lib/libc/gen/setjmp.3
@@ -167,7 +167,7 @@ The
 and
 .Fn longjmp
 functions conform to
-.St -ansiC .
+.St -isoC .
 The
 .Fn sigsetjmp
 and
diff --git a/lib/libc/locale/ctype.3 b/lib/libc/locale/ctype.3
index f64c19ba627c..5c054685e565 100644
--- a/lib/libc/locale/ctype.3
+++ b/lib/libc/locale/ctype.3
@@ -144,4 +144,4 @@ These functions, except for
 and
 .Fn toascii ,
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isalnum.3 b/lib/libc/locale/isalnum.3
index dcf519ecef1f..1d087e214757 100644
--- a/lib/libc/locale/isalnum.3
+++ b/lib/libc/locale/isalnum.3
@@ -98,4 +98,4 @@ returns non-zero if the character tests true.
 The
 .Fn isalnum
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isalpha.3 b/lib/libc/locale/isalpha.3
index 3007d64a067b..80953cde6858 100644
--- a/lib/libc/locale/isalpha.3
+++ b/lib/libc/locale/isalpha.3
@@ -96,4 +96,4 @@ returns non-zero if the character tests true.
 The
 .Fn isalpha
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isascii.3 b/lib/libc/locale/isascii.3
index be2bb0883ad1..027f79453933 100644
--- a/lib/libc/locale/isascii.3
+++ b/lib/libc/locale/isascii.3
@@ -58,4 +58,4 @@ between 0 and octal 0177 inclusive.
 The
 .Fn isascii
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/iscntrl.3 b/lib/libc/locale/iscntrl.3
index cf2d15777905..cefacad9bae6 100644
--- a/lib/libc/locale/iscntrl.3
+++ b/lib/libc/locale/iscntrl.3
@@ -86,4 +86,4 @@ returns non-zero if the character tests true.
 The
 .Fn iscntrl
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isdigit.3 b/lib/libc/locale/isdigit.3
index 7cb89521e361..1a52fa35335e 100644
--- a/lib/libc/locale/isdigit.3
+++ b/lib/libc/locale/isdigit.3
@@ -81,4 +81,4 @@ returns non-zero if the character tests true.
 The
 .Fn isdigit
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isgraph.3 b/lib/libc/locale/isgraph.3
index 0e5d341b7ffb..e835bfddf5ae 100644
--- a/lib/libc/locale/isgraph.3
+++ b/lib/libc/locale/isgraph.3
@@ -98,4 +98,4 @@ returns non-zero if the character tests true.
 The
 .Fn isgraph
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/islower.3 b/lib/libc/locale/islower.3
index 255dfb45e11b..fc4720dd714d 100644
--- a/lib/libc/locale/islower.3
+++ b/lib/libc/locale/islower.3
@@ -86,4 +86,4 @@ returns non-zero if the character tests true.
 The
 .Fn islower
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isprint.3 b/lib/libc/locale/isprint.3
index 0a8849f64925..877f21fa8ce2 100644
--- a/lib/libc/locale/isprint.3
+++ b/lib/libc/locale/isprint.3
@@ -98,4 +98,4 @@ returns non-zero if the character tests true.
 The
 .Fn isprint
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/ispunct.3 b/lib/libc/locale/ispunct.3
index e3c8f3f2f8ee..87622b7bab16 100644
--- a/lib/libc/locale/ispunct.3
+++ b/lib/libc/locale/ispunct.3
@@ -89,4 +89,4 @@ returns non-zero if the character tests true.
 The
 .Fn ispunct
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isspace.3 b/lib/libc/locale/isspace.3
index fbedb53b7869..de962f327104 100644
--- a/lib/libc/locale/isspace.3
+++ b/lib/libc/locale/isspace.3
@@ -81,4 +81,4 @@ returns non-zero if the character tests true.
 The
 .Fn isspace
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isupper.3 b/lib/libc/locale/isupper.3
index 2d186eb00e89..95b2427ebacd 100644
--- a/lib/libc/locale/isupper.3
+++ b/lib/libc/locale/isupper.3
@@ -86,4 +86,4 @@ returns non-zero if the character tests true.
 The
 .Fn isupper
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/isxdigit.3 b/lib/libc/locale/isxdigit.3
index 3c8c3057eaee..0d79a37c789b 100644
--- a/lib/libc/locale/isxdigit.3
+++ b/lib/libc/locale/isxdigit.3
@@ -84,4 +84,4 @@ returns non-zero if the character tests true.
 The
 .Fn isxdigit
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/multibyte.3 b/lib/libc/locale/multibyte.3
index dff599d1e069..a78a4a226a29 100644
--- a/lib/libc/locale/multibyte.3
+++ b/lib/libc/locale/multibyte.3
@@ -239,6 +239,6 @@ The
 and
 .Fn wctomb
 functions conform to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 The current implementation does not support shift states.
diff --git a/lib/libc/locale/setlocale.3 b/lib/libc/locale/setlocale.3
index 2bd565cbc2e2..0a545b8eaa27 100644
--- a/lib/libc/locale/setlocale.3
+++ b/lib/libc/locale/setlocale.3
@@ -303,7 +303,7 @@ The
 and
 .Fn localeconv
 functions conform to
-.St -ansiC .
+.St -isoC .
 .Sh HISTORY
 The
 .Fn setlocale
diff --git a/lib/libc/locale/tolower.3 b/lib/libc/locale/tolower.3
index 9b4a177a3ba1..e879973e4cc6 100644
--- a/lib/libc/locale/tolower.3
+++ b/lib/libc/locale/tolower.3
@@ -89,4 +89,4 @@ one; otherwise the argument is returned unchanged.
 The
 .Fn tolower
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/locale/toupper.3 b/lib/libc/locale/toupper.3
index f32f1a681539..337a2051c7ff 100644
--- a/lib/libc/locale/toupper.3
+++ b/lib/libc/locale/toupper.3
@@ -89,4 +89,4 @@ one; otherwise the argument is returned unchanged.
 The
 .Fn toupper
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdio/fclose.3 b/lib/libc/stdio/fclose.3
index 26ff25dad2a5..04cae30877f1 100644
--- a/lib/libc/stdio/fclose.3
+++ b/lib/libc/stdio/fclose.3
@@ -96,4 +96,4 @@ The
 .Fn fclose
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdio/ferror.3 b/lib/libc/stdio/ferror.3
index d79686d460e4..9ccad39aa6e3 100644
--- a/lib/libc/stdio/ferror.3
+++ b/lib/libc/stdio/ferror.3
@@ -100,4 +100,4 @@ The functions
 and
 .Fn ferror
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdio/fflush.3 b/lib/libc/stdio/fflush.3
index 57c589f97699..73678a80cf91 100644
--- a/lib/libc/stdio/fflush.3
+++ b/lib/libc/stdio/fflush.3
@@ -110,4 +110,4 @@ The
 .Fn fflush
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdio/fgets.3 b/lib/libc/stdio/fgets.3
index dda95dc96b95..c10a65757771 100644
--- a/lib/libc/stdio/fgets.3
+++ b/lib/libc/stdio/fgets.3
@@ -143,7 +143,7 @@ The functions
 and
 .Fn gets
 conform to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 Since it is usually impossible to ensure that the next input line
 is less than some arbitrary length, and because overflowing the
@@ -156,4 +156,4 @@ The
 .Fn gets
 function
 exists purely to conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdio/fopen.3 b/lib/libc/stdio/fopen.3
index b6070c8f629a..ffa699d3defb 100644
--- a/lib/libc/stdio/fopen.3
+++ b/lib/libc/stdio/fopen.3
@@ -104,7 +104,7 @@ string can also include the letter ``b'' either as a third character or
 as a character between the characters in any of the two-character strings
 described above.
 This is strictly for compatibility with
-.St -ansiC
+.St -isoC
 and has no effect; the ``b'' is ignored.
 .Pp
 Any created files will have mode
@@ -244,7 +244,7 @@ and
 .Fn freopen
 functions
 conform to
-.St -ansiC .
+.St -isoC .
 The
 .Fn fdopen
 function
diff --git a/lib/libc/stdio/fputs.3 b/lib/libc/stdio/fputs.3
index 34c4ad191ef2..6d2b1f96fb5d 100644
--- a/lib/libc/stdio/fputs.3
+++ b/lib/libc/stdio/fputs.3
@@ -107,4 +107,4 @@ The functions
 and
 .Fn puts
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdio/fread.3 b/lib/libc/stdio/fread.3
index 16e7da3d8d97..2a2d10b7fdff 100644
--- a/lib/libc/stdio/fread.3
+++ b/lib/libc/stdio/fread.3
@@ -106,4 +106,4 @@ The functions
 and
 .Fn fwrite
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdio/fseek.3 b/lib/libc/stdio/fseek.3
index bd09b84222e9..f12e0471d03d 100644
--- a/lib/libc/stdio/fseek.3
+++ b/lib/libc/stdio/fseek.3
@@ -222,7 +222,7 @@ and
 .Fn rewind
 functions
 conform to
-.St -ansiC .
+.St -isoC .
 .Pp
 The
 .Fn fseeko 
diff --git a/lib/libc/stdio/getc.3 b/lib/libc/stdio/getc.3
index b6e32efe5c42..bd099abd343c 100644
--- a/lib/libc/stdio/getc.3
+++ b/lib/libc/stdio/getc.3
@@ -121,7 +121,7 @@ and
 .Fn getchar
 functions
 conform to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 Since
 .Dv EOF
diff --git a/lib/libc/stdio/mktemp.3 b/lib/libc/stdio/mktemp.3
index 0136fe70df2f..1f79e4f4eb0d 100644
--- a/lib/libc/stdio/mktemp.3
+++ b/lib/libc/stdio/mktemp.3
@@ -173,7 +173,7 @@ passes in a read-only string to
 or
 .Fn mkdtemp .
 This is common with programs that were developed before 
-.St -ansiC
+.St -isoC
 compilers were common.
 For example, calling
 .Fn mkstemp
diff --git a/lib/libc/stdio/printf.3 b/lib/libc/stdio/printf.3
index e85d139e9d6c..7e36fb4a71d3 100644
--- a/lib/libc/stdio/printf.3
+++ b/lib/libc/stdio/printf.3
@@ -612,7 +612,7 @@ and
 .Fn vsprintf
 functions
 conform to
-.St -ansiC .
+.St -isoC .
 .Sh HISTORY
 The functions
 .Fn asprintf
diff --git a/lib/libc/stdio/putc.3 b/lib/libc/stdio/putc.3
index bb82d582de9a..7f180b42bf04 100644
--- a/lib/libc/stdio/putc.3
+++ b/lib/libc/stdio/putc.3
@@ -123,7 +123,7 @@ The functions
 and
 .Fn putchar ,
 conform to
-.St -ansiC .
+.St -isoC .
 A function
 .Fn putw
 function appeared in
diff --git a/lib/libc/stdio/remove.3 b/lib/libc/stdio/remove.3
index 0ba144a0aed2..6627afa802b6 100644
--- a/lib/libc/stdio/remove.3
+++ b/lib/libc/stdio/remove.3
@@ -87,6 +87,6 @@ or
 The
 .Fn remove
 function conforms to
-.St -ansiC
+.St -isoC
 and
 .St -xpg4.2 .
diff --git a/lib/libc/stdio/scanf.3 b/lib/libc/stdio/scanf.3
index 2381f6ba20e6..ed8daea47ad1 100644
--- a/lib/libc/stdio/scanf.3
+++ b/lib/libc/stdio/scanf.3
@@ -247,7 +247,7 @@ the next pointer must be a pointer to
 Equivalent to
 .Cm lx ;
 this violates the
-.St -ansiC ,
+.St -isoC ,
 but is backwards compatible with previous
 .Ux
 systems.
@@ -265,7 +265,7 @@ Equivalent to
 Equivalent to
 .Cm lf ;
 this violates the
-.St -ansiC ,
+.St -isoC ,
 but is backwards compatible with previous
 .Ux
 systems.
@@ -420,7 +420,7 @@ The functions
 and
 .Fn sscanf
 conform to
-.St -ansiC .
+.St -isoC .
 .Sh HISTORY
 The functions
 .Fn vscanf ,
diff --git a/lib/libc/stdio/setbuf.3 b/lib/libc/stdio/setbuf.3
index 7b1b63dc3319..e9fa07972b6f 100644
--- a/lib/libc/stdio/setbuf.3
+++ b/lib/libc/stdio/setbuf.3
@@ -186,7 +186,7 @@ and
 .Fn setvbuf
 functions
 conform to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 The
 .Fn setbuffer
diff --git a/lib/libc/stdio/stdio.3 b/lib/libc/stdio/stdio.3
index 657b308b7fe7..10d79ba8d6e7 100644
--- a/lib/libc/stdio/stdio.3
+++ b/lib/libc/stdio/stdio.3
@@ -225,7 +225,7 @@ library and system functions, especially
 The
 .Nm
 library conforms to
-.St -ansiC .
+.St -isoC .
 .Sh LIST OF FUNCTIONS
 .Bl -column "Description"
 .It Sy "Function	Description"
diff --git a/lib/libc/stdio/tmpnam.3 b/lib/libc/stdio/tmpnam.3
index 3a14e9c24cb0..ed71236223de 100644
--- a/lib/libc/stdio/tmpnam.3
+++ b/lib/libc/stdio/tmpnam.3
@@ -185,7 +185,7 @@ and
 .Fn tmpnam
 functions
 conform to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 These interfaces are provided for System V and
 .Tn ANSI
diff --git a/lib/libc/stdio/ungetc.3 b/lib/libc/stdio/ungetc.3
index 2fec98b6b6d3..f3de89d9315d 100644
--- a/lib/libc/stdio/ungetc.3
+++ b/lib/libc/stdio/ungetc.3
@@ -95,4 +95,4 @@ the operation will fail and the stream will remain unchanged.
 The
 .Fn ungetc
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/abs.3 b/lib/libc/stdlib/abs.3
index 13ee3206f7e7..d51e7f6255d0 100644
--- a/lib/libc/stdlib/abs.3
+++ b/lib/libc/stdlib/abs.3
@@ -72,6 +72,6 @@ the absolute value.
 The
 .Fn abs
 function conforms to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 The absolute value of the most negative integer remains negative.
diff --git a/lib/libc/stdlib/atexit.3 b/lib/libc/stdlib/atexit.3
index a9a0ab9dc2e0..6c5fd2dc9603 100644
--- a/lib/libc/stdlib/atexit.3
+++ b/lib/libc/stdlib/atexit.3
@@ -77,4 +77,4 @@ The
 .Fn atexit
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/atof.3 b/lib/libc/stdlib/atof.3
index ec2f0f769751..4667c062994c 100644
--- a/lib/libc/stdlib/atof.3
+++ b/lib/libc/stdlib/atof.3
@@ -77,4 +77,4 @@ character is defined in the program's locale (category
 The
 .Fn atof
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/atoi.3 b/lib/libc/stdlib/atoi.3
index dbc3d6130f42..e285b6307403 100644
--- a/lib/libc/stdlib/atoi.3
+++ b/lib/libc/stdlib/atoi.3
@@ -73,4 +73,4 @@ It is equivalent to:
 The
 .Fn atoi
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/atol.3 b/lib/libc/stdlib/atol.3
index 06b912cd0721..d0da53458b72 100644
--- a/lib/libc/stdlib/atol.3
+++ b/lib/libc/stdlib/atol.3
@@ -74,4 +74,4 @@ The
 .Fn atol
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/bsearch.3 b/lib/libc/stdlib/bsearch.3
index 3f645a3e7e16..81007969168c 100644
--- a/lib/libc/stdlib/bsearch.3
+++ b/lib/libc/stdlib/bsearch.3
@@ -90,4 +90,4 @@ If two members compare as equal, which member is matched is unspecified.
 The
 .Fn bsearch
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/div.3 b/lib/libc/stdlib/div.3
index acc2cbfed432..ba7f0ac269d2 100644
--- a/lib/libc/stdlib/div.3
+++ b/lib/libc/stdlib/div.3
@@ -67,4 +67,4 @@ The
 .Fn div
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/exit.3 b/lib/libc/stdlib/exit.3
index abde0eb542fa..4b6dd788b367 100644
--- a/lib/libc/stdlib/exit.3
+++ b/lib/libc/stdlib/exit.3
@@ -95,4 +95,4 @@ The
 .Fn exit
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/getenv.3 b/lib/libc/stdlib/getenv.3
index d1122ef7c541..e639b5292af7 100644
--- a/lib/libc/stdlib/getenv.3
+++ b/lib/libc/stdlib/getenv.3
@@ -140,7 +140,7 @@ failed because they were unable to allocate memory for the environment.
 The
 .Fn getenv
 function conforms to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 Successive calls to
 .Fn setenv
diff --git a/lib/libc/stdlib/labs.3 b/lib/libc/stdlib/labs.3
index 2bcb26aba695..76de596dd2da 100644
--- a/lib/libc/stdlib/labs.3
+++ b/lib/libc/stdlib/labs.3
@@ -64,6 +64,6 @@ The
 .Fn labs
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 The absolute value of the most negative integer remains negative.
diff --git a/lib/libc/stdlib/ldiv.3 b/lib/libc/stdlib/ldiv.3
index a0b6798e9ac9..f4c791a551c1 100644
--- a/lib/libc/stdlib/ldiv.3
+++ b/lib/libc/stdlib/ldiv.3
@@ -70,4 +70,4 @@ The
 .Fn ldiv
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/malloc.3 b/lib/libc/stdlib/malloc.3
index 05b40e6d7db6..cd4485643bfe 100644
--- a/lib/libc/stdlib/malloc.3
+++ b/lib/libc/stdlib/malloc.3
@@ -445,7 +445,7 @@ The
 and
 .Fn free
 functions conform to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 The messages printed in case of problems provide no detail about the
 actual values.
diff --git a/lib/libc/stdlib/memory.3 b/lib/libc/stdlib/memory.3
index bef94d1f81ef..34fae3f42eea 100644
--- a/lib/libc/stdlib/memory.3
+++ b/lib/libc/stdlib/memory.3
@@ -78,4 +78,4 @@ These functions, with the exception of
 and
 .Fn mmap
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/qsort.3 b/lib/libc/stdlib/qsort.3
index 1192721fb24e..7c09dac0bf92 100644
--- a/lib/libc/stdlib/qsort.3
+++ b/lib/libc/stdlib/qsort.3
@@ -235,4 +235,4 @@ The
 .Fn qsort
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/stdlib/rand.3 b/lib/libc/stdlib/rand.3
index 2690aa98d2e3..b47ff67b8809 100644
--- a/lib/libc/stdlib/rand.3
+++ b/lib/libc/stdlib/rand.3
@@ -98,7 +98,7 @@ and
 .Fn srand
 functions
 conform to
-.St -ansiC .
+.St -isoC .
 .Pp
 The
 .Fn rand_r
diff --git a/lib/libc/stdlib/strtod.3 b/lib/libc/stdlib/strtod.3
index ca7374ad2b40..d0d335cefea8 100644
--- a/lib/libc/stdlib/strtod.3
+++ b/lib/libc/stdlib/strtod.3
@@ -117,7 +117,7 @@ The
 .Fn strtod
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 .Sh AUTHORS
 The author of this software is
 .An David M. Gay .
diff --git a/lib/libc/stdlib/strtol.3 b/lib/libc/stdlib/strtol.3
index 528b6d3a0822..3f28713235b6 100644
--- a/lib/libc/stdlib/strtol.3
+++ b/lib/libc/stdlib/strtol.3
@@ -165,6 +165,6 @@ The
 .Fn strtol
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 Ignores the current locale.
diff --git a/lib/libc/stdlib/strtoul.3 b/lib/libc/stdlib/strtoul.3
index 01c092f3ae79..d3e9696570ee 100644
--- a/lib/libc/stdlib/strtoul.3
+++ b/lib/libc/stdlib/strtoul.3
@@ -160,6 +160,6 @@ The
 .Fn strtoul
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 Ignores the current locale.
diff --git a/lib/libc/stdlib/system.3 b/lib/libc/stdlib/system.3
index b849f02f675d..ef9b06f6584d 100644
--- a/lib/libc/stdlib/system.3
+++ b/lib/libc/stdlib/system.3
@@ -97,7 +97,7 @@ The
 .Fn system
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 and is expected to be
 .St -p1003.2
 compatible.
diff --git a/lib/libc/stdtime/strftime.3 b/lib/libc/stdtime/strftime.3
index d4d4ebff1344..a2e17d9b0b28 100644
--- a/lib/libc/stdtime/strftime.3
+++ b/lib/libc/stdtime/strftime.3
@@ -232,7 +232,7 @@ The
 .Fn strftime
 function
 conforms to
-.St -ansiC
+.St -isoC
 with a lot of extensions including
 .Ql %C ,
 .Ql \&%D ,
diff --git a/lib/libc/string/bstring.3 b/lib/libc/string/bstring.3
index 873c785bca93..28ec676ec6f6 100644
--- a/lib/libc/string/bstring.3
+++ b/lib/libc/string/bstring.3
@@ -97,7 +97,7 @@ The functions
 and
 .Fn memset
 conform to
-.St -ansiC .
+.St -isoC .
 .Sh HISTORY
 The functions
 .Fn bzero
diff --git a/lib/libc/string/memchr.3 b/lib/libc/string/memchr.3
index 2da1b839df56..fc56ee67698d 100644
--- a/lib/libc/string/memchr.3
+++ b/lib/libc/string/memchr.3
@@ -79,4 +79,4 @@ The
 .Fn memchr
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/memcmp.3 b/lib/libc/string/memcmp.3
index 1f38f3ac6705..1bf3c8f3e742 100644
--- a/lib/libc/string/memcmp.3
+++ b/lib/libc/string/memcmp.3
@@ -82,4 +82,4 @@ The
 .Fn memcmp
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/memcpy.3 b/lib/libc/string/memcpy.3
index 6b8ce3059afc..267b49679ce5 100644
--- a/lib/libc/string/memcpy.3
+++ b/lib/libc/string/memcpy.3
@@ -74,7 +74,7 @@ The
 .Fn memcpy
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 In this implementation
 .Fn memcpy
diff --git a/lib/libc/string/memmove.3 b/lib/libc/string/memmove.3
index 71626f7890e4..8d14efc68412 100644
--- a/lib/libc/string/memmove.3
+++ b/lib/libc/string/memmove.3
@@ -75,4 +75,4 @@ The
 .Fn memmove
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/memset.3 b/lib/libc/string/memset.3
index 2a1253ed6f76..baeca31fc26d 100644
--- a/lib/libc/string/memset.3
+++ b/lib/libc/string/memset.3
@@ -70,4 +70,4 @@ The
 .Fn memset
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strcat.3 b/lib/libc/string/strcat.3
index fbb2996bf5cd..fed597941e68 100644
--- a/lib/libc/string/strcat.3
+++ b/lib/libc/string/strcat.3
@@ -98,4 +98,4 @@ and
 .Fn strncat
 functions
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strchr.3 b/lib/libc/string/strchr.3
index 86c8bbc43f36..9d8d6eec4541 100644
--- a/lib/libc/string/strchr.3
+++ b/lib/libc/string/strchr.3
@@ -85,4 +85,4 @@ The
 .Fn strchr
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strcmp.3 b/lib/libc/string/strcmp.3
index 22fe3d0370e5..60d99c480762 100644
--- a/lib/libc/string/strcmp.3
+++ b/lib/libc/string/strcmp.3
@@ -94,4 +94,4 @@ and
 .Fn strncmp
 functions
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strcoll.3 b/lib/libc/string/strcoll.3
index b6d5c75ca182..40cb2f5569f3 100644
--- a/lib/libc/string/strcoll.3
+++ b/lib/libc/string/strcoll.3
@@ -72,4 +72,4 @@ The
 .Fn strcoll
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strcpy.3 b/lib/libc/string/strcpy.3
index 4c9212a6c9e8..cb38dce6b8fe 100644
--- a/lib/libc/string/strcpy.3
+++ b/lib/libc/string/strcpy.3
@@ -122,4 +122,4 @@ and
 .Fn strncpy
 functions
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strcspn.3 b/lib/libc/string/strcspn.3
index 1a222a320614..c3eff53b8efe 100644
--- a/lib/libc/string/strcspn.3
+++ b/lib/libc/string/strcspn.3
@@ -82,4 +82,4 @@ The
 .Fn strcspn
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/string.3 b/lib/libc/string/string.3
index 1131b6dddad0..6a3457c12b9b 100644
--- a/lib/libc/string/string.3
+++ b/lib/libc/string/string.3
@@ -155,4 +155,4 @@ and
 .Fn strtok
 functions
 conform to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strlen.3 b/lib/libc/string/strlen.3
index 31e8ae171def..07b8f6129b52 100644
--- a/lib/libc/string/strlen.3
+++ b/lib/libc/string/strlen.3
@@ -70,4 +70,4 @@ The
 .Fn strlen
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strpbrk.3 b/lib/libc/string/strpbrk.3
index b9a3e5227b65..b7fa71005480 100644
--- a/lib/libc/string/strpbrk.3
+++ b/lib/libc/string/strpbrk.3
@@ -77,4 +77,4 @@ The
 .Fn strpbrk
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strrchr.3 b/lib/libc/string/strrchr.3
index d2d8c9eae9c6..4d5ec0352354 100644
--- a/lib/libc/string/strrchr.3
+++ b/lib/libc/string/strrchr.3
@@ -88,4 +88,4 @@ The
 .Fn strrchr
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strsep.3 b/lib/libc/string/strsep.3
index bc945f7a6cf9..e0fe12402aab 100644
--- a/lib/libc/string/strsep.3
+++ b/lib/libc/string/strsep.3
@@ -111,7 +111,7 @@ function.
 While the
 .Fn strtok
 function should be preferred for portability reasons (it conforms to
-.St -ansiC )
+.St -isoC )
 it is unable to handle empty fields, i.e. detect fields delimited by
 two adjacent delimiter characters, or to be used for more than a single
 string at a time.
diff --git a/lib/libc/string/strspn.3 b/lib/libc/string/strspn.3
index 41d70ce5f8cf..07e4158c43f8 100644
--- a/lib/libc/string/strspn.3
+++ b/lib/libc/string/strspn.3
@@ -77,4 +77,4 @@ The
 .Fn strspn
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strstr.3 b/lib/libc/string/strstr.3
index f6b20caa3d0b..c29ddf14536e 100644
--- a/lib/libc/string/strstr.3
+++ b/lib/libc/string/strstr.3
@@ -86,4 +86,4 @@ The
 .Fn strstr
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libc/string/strtok.3 b/lib/libc/string/strtok.3
index ea28f94bcce8..297c982ec6c2 100644
--- a/lib/libc/string/strtok.3
+++ b/lib/libc/string/strtok.3
@@ -150,7 +150,7 @@ The
 .Fn strtok
 function
 conforms to
-.St -ansiC .
+.St -isoC .
 .Sh BUGS
 The System V
 .Fn strtok ,
diff --git a/lib/libc/string/strxfrm.3 b/lib/libc/string/strxfrm.3
index 5e496587289e..617cf7c19c22 100644
--- a/lib/libc/string/strxfrm.3
+++ b/lib/libc/string/strxfrm.3
@@ -96,4 +96,4 @@ The
 .Fn strxfrm
 function
 conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/acos.3 b/lib/libm/common_source/acos.3
index d6d5d7b40e8a..ceff4c7dd641 100644
--- a/lib/libm/common_source/acos.3
+++ b/lib/libm/common_source/acos.3
@@ -88,4 +88,4 @@ and a reserved operand fault is generated.
 The
 .Fn acos
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/asin.3 b/lib/libm/common_source/asin.3
index ca8ffda71884..fe6184b9d58f 100644
--- a/lib/libm/common_source/asin.3
+++ b/lib/libm/common_source/asin.3
@@ -90,4 +90,4 @@ a reserved operand fault generated.
 The
 .Fn asin
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/atan.3 b/lib/libm/common_source/atan.3
index 7805dff36c8f..2cc38f5ee8dd 100644
--- a/lib/libm/common_source/atan.3
+++ b/lib/libm/common_source/atan.3
@@ -74,4 +74,4 @@ radians.
 The
 .Fn atan
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/atan2.3 b/lib/libm/common_source/atan2.3
index 075112440484..4ad7ad542586 100644
--- a/lib/libm/common_source/atan2.3
+++ b/lib/libm/common_source/atan2.3
@@ -188,4 +188,4 @@ r := \(sr(x\(**x+y\(**y);\0\0if r = 0 then x := copysign(1,x);
 The
 .Fn atan2
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/ceil.3 b/lib/libm/common_source/ceil.3
index a585194e6cb1..1aa6f2d3389d 100644
--- a/lib/libm/common_source/ceil.3
+++ b/lib/libm/common_source/ceil.3
@@ -65,4 +65,4 @@ expressed as a double.
 The
 .Fn ceil
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/cos.3 b/lib/libm/common_source/cos.3
index d6cf6480810d..b0a7c463ff00 100644
--- a/lib/libm/common_source/cos.3
+++ b/lib/libm/common_source/cos.3
@@ -73,4 +73,4 @@ function returns the cosine value.
 The
 .Fn acos
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/cosh.3 b/lib/libm/common_source/cosh.3
index e6c40160427e..091dcc1ba02d 100644
--- a/lib/libm/common_source/cosh.3
+++ b/lib/libm/common_source/cosh.3
@@ -74,4 +74,4 @@ is set to
 The
 .Fn cosh
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/fabs.3 b/lib/libm/common_source/fabs.3
index b4874dccda75..2ffeaed4b205 100644
--- a/lib/libm/common_source/fabs.3
+++ b/lib/libm/common_source/fabs.3
@@ -66,4 +66,4 @@ function returns the absolute value of
 The
 .Fn fabs
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/floor.3 b/lib/libm/common_source/floor.3
index b71e37d03c25..e2d848f5668b 100644
--- a/lib/libm/common_source/floor.3
+++ b/lib/libm/common_source/floor.3
@@ -65,4 +65,4 @@ expressed as a double.
 The
 .Fn floor
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/fmod.3 b/lib/libm/common_source/fmod.3
index 39713bee9998..57619692cd34 100644
--- a/lib/libm/common_source/fmod.3
+++ b/lib/libm/common_source/fmod.3
@@ -75,4 +75,4 @@ function returns zero is implementation-defined.
 The
 .Fn fmod
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/sin.3 b/lib/libm/common_source/sin.3
index 07d87d2ba68f..abf34883b556 100644
--- a/lib/libm/common_source/sin.3
+++ b/lib/libm/common_source/sin.3
@@ -72,4 +72,4 @@ function returns the sine value.
 The
 .Fn sin
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/sinh.3 b/lib/libm/common_source/sinh.3
index f004596e8f29..30094733b956 100644
--- a/lib/libm/common_source/sinh.3
+++ b/lib/libm/common_source/sinh.3
@@ -75,4 +75,4 @@ is set to
 The
 .Fn sinh
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/sqrt.3 b/lib/libm/common_source/sqrt.3
index 0a2d74be7bb4..3fc833ec43c8 100644
--- a/lib/libm/common_source/sqrt.3
+++ b/lib/libm/common_source/sqrt.3
@@ -115,7 +115,7 @@ carried.
 The
 .Fn sqrt
 function conforms to
-.St -ansiC .
+.St -isoC .
 .Sh HISTORY
 The
 .Fn cbrt
diff --git a/lib/libm/common_source/tan.3 b/lib/libm/common_source/tan.3
index 2f63bb72295a..526be7da57d3 100644
--- a/lib/libm/common_source/tan.3
+++ b/lib/libm/common_source/tan.3
@@ -73,4 +73,4 @@ function returns the tangent value.
 The
 .Fn tan
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/libm/common_source/tanh.3 b/lib/libm/common_source/tanh.3
index 3af1f4d5e8a9..1201b508bfc2 100644
--- a/lib/libm/common_source/tanh.3
+++ b/lib/libm/common_source/tanh.3
@@ -70,4 +70,4 @@ function returns the hyperbolic tangent value.
 The
 .Fn tanh
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/acos.3 b/lib/msun/man/acos.3
index 8b91db750021..2776bbe5e4e4 100644
--- a/lib/msun/man/acos.3
+++ b/lib/msun/man/acos.3
@@ -93,4 +93,4 @@ and a reserved operand fault is generated.
 The
 .Fn acos
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/asin.3 b/lib/msun/man/asin.3
index b0728eeeb3f4..8b26bd273f83 100644
--- a/lib/msun/man/asin.3
+++ b/lib/msun/man/asin.3
@@ -95,4 +95,4 @@ a reserved operand fault generated.
 The
 .Fn asin
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/atan.3 b/lib/msun/man/atan.3
index e26d0127ae65..c5e360d0b2b8 100644
--- a/lib/msun/man/atan.3
+++ b/lib/msun/man/atan.3
@@ -79,4 +79,4 @@ radians.
 The
 .Fn atan
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/atan2.3 b/lib/msun/man/atan2.3
index e13ce28d0c9f..457ab08d442e 100644
--- a/lib/msun/man/atan2.3
+++ b/lib/msun/man/atan2.3
@@ -193,4 +193,4 @@ r := \(sr(x\(**x+y\(**y);\0\0if r = 0 then x := copysign(1,x);
 The
 .Fn atan2
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/ceil.3 b/lib/msun/man/ceil.3
index 93f4595779e7..f7fd5212478d 100644
--- a/lib/msun/man/ceil.3
+++ b/lib/msun/man/ceil.3
@@ -65,4 +65,4 @@ greater than or equal to
 The
 .Fn ceil
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/cos.3 b/lib/msun/man/cos.3
index c6b108433827..32a3762a15ed 100644
--- a/lib/msun/man/cos.3
+++ b/lib/msun/man/cos.3
@@ -78,4 +78,4 @@ functions return the cosine value.
 The
 .Fn cos
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/cosh.3 b/lib/msun/man/cosh.3
index 799ba9794299..4c9d9b393bc5 100644
--- a/lib/msun/man/cosh.3
+++ b/lib/msun/man/cosh.3
@@ -79,4 +79,4 @@ is set to
 The
 .Fn cosh
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/fabs.3 b/lib/msun/man/fabs.3
index 551b41d8ce08..179d352a010f 100644
--- a/lib/msun/man/fabs.3
+++ b/lib/msun/man/fabs.3
@@ -71,4 +71,4 @@ functions return the absolute value of
 The
 .Fn fabs
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/floor.3 b/lib/msun/man/floor.3
index 4371fd53c4ec..29d2283b1ddb 100644
--- a/lib/msun/man/floor.3
+++ b/lib/msun/man/floor.3
@@ -65,4 +65,4 @@ less than or equal to
 The
 .Fn floor
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/fmod.3 b/lib/msun/man/fmod.3
index 849b1d77b44f..ec1f0c7f3be2 100644
--- a/lib/msun/man/fmod.3
+++ b/lib/msun/man/fmod.3
@@ -82,4 +82,4 @@ function returns zero is implementation-defined.
 The
 .Fn fmod
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/sin.3 b/lib/msun/man/sin.3
index 82e873bd8286..200ee63fcfcb 100644
--- a/lib/msun/man/sin.3
+++ b/lib/msun/man/sin.3
@@ -77,4 +77,4 @@ functions return the sine value.
 The
 .Fn sin
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/sinh.3 b/lib/msun/man/sinh.3
index d445a1f1ef6c..c7921c9a012c 100644
--- a/lib/msun/man/sinh.3
+++ b/lib/msun/man/sinh.3
@@ -79,4 +79,4 @@ is set to
 The
 .Fn sinh
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/sqrt.3 b/lib/msun/man/sqrt.3
index ae5514aafe3d..956eb5d4c466 100644
--- a/lib/msun/man/sqrt.3
+++ b/lib/msun/man/sqrt.3
@@ -126,7 +126,7 @@ carried.
 The
 .Fn sqrt
 function conforms to
-.St -ansiC .
+.St -isoC .
 .Sh HISTORY
 The
 .Fn cbrt
diff --git a/lib/msun/man/tan.3 b/lib/msun/man/tan.3
index 642e243c5756..a1b245770415 100644
--- a/lib/msun/man/tan.3
+++ b/lib/msun/man/tan.3
@@ -76,4 +76,4 @@ function returns the tangent value.
 The
 .Fn tan
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/lib/msun/man/tanh.3 b/lib/msun/man/tanh.3
index 0145bb783646..4659366392be 100644
--- a/lib/msun/man/tanh.3
+++ b/lib/msun/man/tanh.3
@@ -75,4 +75,4 @@ functions return the hyperbolic tangent value.
 The
 .Fn tanh
 function conforms to
-.St -ansiC .
+.St -isoC .
diff --git a/share/examples/mdoc/example.1 b/share/examples/mdoc/example.1
index 236a8fffbba5..001074c85ac9 100644
--- a/share/examples/mdoc/example.1
+++ b/share/examples/mdoc/example.1
@@ -132,7 +132,7 @@ command has no known compatibility issues.
 If the command conforms to some standard, such as
 .St -p1003.2
 or
-.St -ansiC ,
+.St -isoC ,
 it should be noted here.
 .Sh HISTORY
 The
diff --git a/share/examples/mdoc/example.3 b/share/examples/mdoc/example.3
index a887b7a13850..6c1e34a37c7c 100644
--- a/share/examples/mdoc/example.3
+++ b/share/examples/mdoc/example.3
@@ -298,7 +298,7 @@ Need authenticator.
 If the command conforms to some standard, such as
 .St -p1003.2
 or
-.St -ansiC ,
+.St -isoC ,
 it should be noted here.
 .Sh HISTORY
 The
diff --git a/share/man/man3/stdarg.3 b/share/man/man3/stdarg.3
index 07a724d18575..1ec79c759e1e 100644
--- a/share/man/man3/stdarg.3
+++ b/share/man/man3/stdarg.3
@@ -179,7 +179,7 @@ The
 and
 .Fn va_end
 macros conform to
-.St -ansiC .
+.St -isoC .
 .Sh COMPATIBILITY
 These macros are
 .Em not