diff --git a/texk/web2c/cwebdir/cwebacromac.tex b/texk/web2c/cwebdir/cwebacromac.tex
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+% hypertext macros for CWEB listings (in addition to cwebmac.tex)
+% Version 1.0 --- August 2023
+\ifx\acrohint\undefined\else\endinput\fi % these are not standalone macros
+\ifacro % The following are pdf macros
+\def\thewidth{\the\wd0 \space}
+\def\theheight{\the\ht\strutbox\space}
+\def\thedepth{\the\dp\strutbox\space}
+\ifpdftex
+  \ifx\pdfannotlink\undefined\let\pdfannotlink\pdfstartlink\fi% for pdfTeX 0.14
+  \def\pdflink#1#2{\hbox{\pdfannotlink height \theheight depth \thedepth
+    attr{/Border [0 0 0]} goto num #1 \Blue #1\Black\pdfendlink}} % changed 3.69
+\else\def\pdflink#1#2{\setbox0=\hbox{\special{pdf: bc [ \pdflinkcolor ]}{#1}%
+    \special{pdf: ec}}\special{pdf: ann width \thewidth height \theheight
+      depth \thedepth << /Type /Annot /Subtype /Link
+      /Border [0 0 0] /A << /S /GoTo /D (#2) >> >>}\box0\relax}\fi
+\def\sanitizecommand#1#2{\addtokens\usersanitizer
+       {\noexpand\dosanitizecommand\noexpand#1{#2}}}
+\def\dosanitizecommand#1#2{\ifx\nxt#1\addF{#2}\fi}
+
+\catcode`\[=1 \catcode`\]=2 \catcode`\{=12 \catcode`\}=12
+  \def\lbchar[{]  \def\rbchar[}]
+\catcode`\[=12 \catcode`\]=12 \catcode`\{=1 \catcode`\}=2
+\catcode`\~=12 \def\tildechar{~}  \catcode`\~=13
+\catcode`\|=0 |catcode`|\=12 |def|bschar{\} |catcode`|\=0 \catcode`\|=12
+\def\makeoutlinetoks{\Tnumfalse\afterassignment\makeolproctok\let\nxt= }
+\def\makeolnexttok{\afterassignment\makeolproctok\let\nxt= }
+\def\makeolgobbletok{\afterassignment\makeolnexttok\let\nxt= }
+\def\addF#1{\addtokens\toksF{#1}\tokprocessedtrue}
+% now comes a routine to "sanitize" section names, for pdf outlines
+\def\makeolproctok{\tokprocessedfalse
+  \let\next\makeolnexttok % default
+  \ifx\nxt\outlinedone\let\next\outlinedone
+  \else\ifx{\nxt \else\ifx}\nxt \Tnumfalse \instrfalse % skip braces
+  \else\ifx$\nxt % or a $ sign
+  \else\ifx^\nxt \addF^\else\ifx_\nxt \addF_% sanitize ^ and _
+  \else\ifx\nxt\spacechar \addF\space
+  \else\if\noexpand\nxt\relax % we have a control sequence; is it one we know?
+    \ifx\nxt~\addF\space
+    \else\ifx\nxt\onespace\addF\space
+    \else\the\usersanitizer
+    \iftokprocessed\else\makeolproctokctli
+    \iftokprocessed\else\makeolproctokctlii
+    \iftokprocessed\else\makeolproctokctliii % if not recognised, skip it
+    \fi\fi\fi\fi\fi
+   \else  % we don't have a control sequence, it's an ordinary char
+    \ifx/\nxt \addF{\string\/}% quote chars special to PDF with backslash
+    \else\ifx(\nxt \addF{\string\(}\else\ifx)\nxt \addF{\string\)}%
+    \else\ifx[\nxt \addF{\string\[}\else\ifx]\nxt \addF{\string\]}%
+    \else\expandafter\makeolproctokchar\meaning\nxt
+   \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+  \next
+}
+\def\makeolproctokchar#1 #2 #3{\addF{#3}}
+\def\makeolproctokctli{%
+  \ifx\nxt\CEE\addF{C}\let\next\makeolgobbletok % \CEE/
+  \else\ifx\nxt\UNIX\addF{UNIX}\let\next\makeolgobbletok % \UNIX/
+  \else\ifx\nxt\TEX\addF{TeX}\let\next\makeolgobbletok % \TEX/
+  \else\ifx\nxt\TeX\addF{TeX}\else\ifx\nxt\LaTeX\addF{LaTeX}%
+  \else\ifx\nxt\CPLUSPLUS\addF{C++}\let\next\makeolgobbletok % \CPLUSPLUS/
+  \else\ifx\nxt\Cee\addF{C}%
+  \else\ifx\nxt\PB \let\next\makeolgobbletok \tokprocessedtrue % \PB{...}
+  \else\ifx\nxt\.\tokprocessedtrue\instrtrue % \.{...}
+      % skip \|
+  \else\ifx\nxt\\\ifinstr\addF{\bschar\bschar}\else\tokprocessedtrue\fi
+  \else\ifx\nxt\&\ifinstr\addF&\else\tokprocessedtrue\fi
+  \else\ifx\nxt\~\ifTnum\addF{0}\else\addF\tildechar\fi % 077->\T{\~77}
+  \else\ifx\nxt\_\ifTnum\addF{E}\else\addF_\fi  % 0.1E5->\T{0.1\_5}
+  \else\ifx\nxt\^\ifTnum\addF{0x}\else\addF^\fi  % 0x77 -> \T{\^77}
+  \else\ifx\nxt\\\\\ifTnum\addF{0b}\else\addF\\\fi  % 0b10111 -> \T{\\10111}
+  \else\ifx\nxt\$\ifTnum\tokprocessedtrue\else\addF$\fi %$% \T{77\$L}
+  \else\ifx\nxt\{\addF\lbchar       \else\ifx\nxt\}\addF\rbchar
+  \else\ifx\nxt\ \addF\space        \else\ifx\nxt\#\addF{\string\#}%
+  \else\ifx\nxt\PP\addF{++}\else\ifx\nxt\MM\addF{--}%
+  \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+}
+\def\makeolproctokctlii{%
+  \ifx\nxt\MG\addF{->}\else\ifx\nxt\GG\addF{>>}%
+  \else\ifx\nxt\LL\addF{<<}\else\ifx\nxt\NULL\addF{NULL}%
+  \else\ifx\nxt\AND\addF&\else\ifx\nxt\OR\addF|%
+  \else\ifx\nxt\XOR\addF^\else\ifx\nxt\CM\addF\tildechar
+  \else\ifx\nxt\MOD\addF{\string\%}\else\ifx\nxt\DC\addF{::}%
+  \else\ifx\nxt\PA\addF{.*}\else\ifx\nxt\MGA\addF{->*}%
+  \else\ifx\nxt\this\addF{this}\else\ifx\nxt\?\addF?%
+  \else\ifx\nxt\E\addF{==}\else\ifx\nxt\G\addF{>=}%
+  \else\ifx\nxt\I\addF{!=}\else\ifx\nxt\K\addF{=}%
+  \else\ifx\nxt\l\addF{l}\else\ifx\nxt\L\addF{L}%
+  \else\ifx\nxt\o\addF{o}\else\ifx\nxt\O\addF{O}%
+  \else\ifx\nxt\R\addF!%
+  \else\ifx\nxt\T \Tnumtrue \let\next\makeolgobbletok
+    \tokprocessedtrue % \T{number}
+  \else\ifx\nxt\AM\addF&\else\ifx\nxt\%\addF{\string\%}%
+  \fi\fi\fi\fi\fi \fi\fi\fi\fi\fi
+  \fi\fi\fi\fi\fi \fi\fi\fi\fi\fi
+  \fi\fi\fi\fi\fi\fi
+}
+\def\makeolproctokctliii{%
+  \ifx\nxt\V\addF{||}\else\ifx\nxt\W\addF{&&}\else\ifx\nxt\Z\addF{<=}%
+  \else\ifx\nxt\*\addF*\else\ifx\nxt\Xand\addF{\space and\space}%
+  \else\ifx\nxt\Xandxeq\addF{\space and_eq\space}%
+  \else\ifx\nxt\Xbitand\addF{\space bitand\space}%
+  \else\ifx\nxt\Xbitor\addF{\space bitor\space}%
+  \else\ifx\nxt\Xcompl\addF{\space compl\space}%
+  \else\ifx\nxt\Xnot\addF{\space not\space}%
+  \else\ifx\nxt\Xnotxeq\addF{\space not_eq\space}%
+  \else\ifx\nxt\Xor\addF{\space or\space}%
+  \else\ifx\nxt\Xorxeq\addF{\space or_eq\space}%
+  \else\ifx\nxt\Xxor\addF{\space xor\space}%
+  \else\ifx\nxt\Xxorxeq\addF{\space xor_eq\space}%
+  \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
+  \fi\fi\fi\fi\fi
+}
+\def\outlinedone{\edef\outlinest{\global\noexpand\toksE={\the\toksF}}%
+  \outlinest\let\outlinedone=\relax}
+\fi % End of pdf macros
+
+\ifhint
+% The following uses HINT primitives to implement:
+% \HINThome to mark the position of the home page
+% \HINTlabel to attach a label to the top of a section
+% \HINTlink to link a section number to the section label
+% \HINTcontents to produce an 'outline' item
+% These are the top level HINT macros that are used in this file
+% No HINT primitives are used directly.
+\def\HINThome{\HINTdest name {HINT.home}%
+  \HINToutline goto name {HINT.home} depth 1 {Table of Contents}}
+\def\HINTlabel{{\let\*=\empty\HINTdest num \secstar top}}
+\def\HINTlink#1#2{\HINTstartlink goto num #1 {#1}\HINTendlink}% #2 not used ???
+\def\HINTcontents#1#2#3{\HINToutline goto num #3 depth #2 {#1}}
+\let\pdflink=\HINTlink
+\fi % End of HINT macros
+
+% Common macros for \ifacro and \ifhint
+\ifacrohint
+\def\pdfnote#1.{\setbox0=\hbox{\toksA={#1.}\toksB={}\maketoks}\the\toksA}
+\def\firstsecno#1.{\setbox0=\hbox{\toksA={#1.}\toksB={}%
+    \def\makenote{\addtokens\toksB{\the\toksC}\def\makenote{\toksD={}
+      \toksC={}\let\space\empty}\makenote}\maketoks}}
+\def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
+\def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}%
+  \ifcat\noexpand\first0\countB=`#1\else\countB=0\fi\toksA={#2}}
+\def\maketoks{\expandafter\poptoks\the\toksA|ENDTOKS|%
+  \ifnum\countB>`9 \countB=0 \fi
+  \ifnum\countB<`0
+    \ifnum0=\countC\else\makenote\fi
+    \ifx\first.\let\next=\maketoksdone\else
+        \let\next=\maketoks
+        \addtokens\toksB{\the\toksD}
+        \ifx\first,\addtokens\toksB{\space}\fi
+    \fi
+  \else \addtokens\toksC{\the\toksD}\global\countC=1\let\next=\maketoks
+  \fi
+  \next
+}
+\def\makenote{\addtokens\toksB
+    {\noexpand\pdflink{\the\toksC}{\romannumeral\the\toksC}}\toksC={}\global\countC=0}
+\def\maketoksdone{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
+\fi % End of common macros
+