%\iffalse
%
%esint.dtx version 1.2d 2019/07/19
%
%
%Eddie Saudrais
%http://www.phylam.org
%e.saudrais@wanadoo.fr
%
%
%<*driver>
\documentclass[a4paper]{ltxdoc}
\usepackage{esint}
\usepackage{mflogo}
\parindent 0cm
\topmargin -1cm
\begin{document}
\DocInput{esint.dtx}
\end{document}
%</driver>
%\fi
%\title{Alternate integral signs with \LaTeX{}}
%\author{Eddie Saudrais}
%\date{version 1.2d 2019/08/27}
%\maketitle
%\MakeShortVerb{\|}
%\begin{abstract}
%The package \textsf{esint.sty} allows you to use new integral symbols.
%\end{abstract}
%\section{License}
%The LATEX Project Public Li­cense
%\section{Using esint}
%Load the package with \verb|\usepackage{esint}|, and enjoy!
%\begin{itemize}
%\item
%BE CAREFUL: if you are using \texttt{amslatex}, you must load
%\texttt{esint} AFTER \texttt{amslatex}.
%\item
%This package is available with two options: intimits and intnolimits.
%
%When loading with \verb+\usepackage[nointlimits]{esint}+ (default), \verb+\[\int_0^1f(x)dx\]+ gives \[\int_0^1f(x)dx\]
%
%When loading width \verb+\usepackage[intlimits]{esint}+, \verb+\[\int_0^1f(x)dx\]+ gives \[\int\limits_0^1f(x)dx\].
%
%\end{itemize}
%
%Available integrals signs:

%\begin{tabular}{c c c}
%Commande  & textstyle & displaystyle \\
%&&\\
%\verb+\int+ & $\int$ & $\displaystyle \int$\\
%&&\\
%\verb+\iint+ & $\iint$& $\displaystyle \iint$\\
%&&\\
%\verb+\iiint+ & $\iiint$ & $\displaystyle \iiint$\\
%&&\\
%\verb+\iiiint+ & $\iiiint$ & $\displaystyle \iiiint$\\
%&&\\
%\verb+\idotsint+ & $\idotsint$ & $\displaystyle \idotsint$
%\end{tabular}

%\begin{tabular}{c c c}
%\verb+\oint+ & $\oint$ & $\displaystyle \oint$\\
%&&\\
%\verb+\oiint+ & $\oiint$ & $\displaystyle \oiint$\\
%&&\\
%\verb+\varoiint+ & $\varoiint$ & $\displaystyle \varoiint$\\
%&&\\
%\verb+\sqint+ & $\sqint$ &$\displaystyle \sqint$\\
%&&\\
%\verb+\sqiint+ & $\sqiint$ & $\displaystyle \sqiint$\\
%&&\\
%\verb+\ointctrclockwise+ & $\ointctrclockwise$ & $\displaystyle \ointctrclockwise$\\
%&&\\
%\verb+\ointclockwise+ & $\ointclockwise$ & $\displaystyle \ointclockwise$\\
%&&\\
%\verb+\varointclockwise+ & $\varointclockwise$ & $\displaystyle \varointclockwise$\\
%&&\\
%\verb+\varointctrclockwise+ & $\varointctrclockwise$ & $\displaystyle \varointctrclockwise$\\
%&&\\
%\verb+\fint+ & $\fint$  &$\displaystyle \fint$\\
%&&\\
%\verb+\landupint+ & $\landupint$  &$\displaystyle \landupint$\\
%&&\\
%\verb+\landdownint+ & $\landdownint$ & $\displaystyle \landdownint$
%\end{tabular}
%\StopEventually{}
%
%You can customize the space between integral sign in multiple
%integrals. You have to modify lines 12 and 13 of the \texttt{esint10.mf}
%file: \texttt{tdec\#} and \texttt{ddec\#} are spaces between
%signs. If you modify \texttt{esint10.mf}, delete
%\texttt{esint10.tfm}, the generated \texttt{*.pk} files, and run
%\MF{} on \texttt{esint10.mf}. Of course, you have to remove pub files: the type 1 version will not be modified!
%
%\section{Updates}
%\begin{itemize}
%\item
%20/01/2005: change in esint.fd in order to avoid a problem inside align environment.
%Thank's to Eckhard Neber.
%Font files (mf, pfb, tfm...) are unchanged.
%\item
%2019/07/19: add intlimits and nointlimits options, and modify \verb+\dotsint+ command as \verb+\idotsint+ to modify all amsmath symbols (request from Frank Mittelbach).
%\item
%2019/08/21: correction of wrong esint.dtx file.
%\item
%2019/08/27: correction of wrong esint.ins file.
%\end{itemize}
%
%\section{The code}
%The package identifies himself
%    \begin{macrocode}
%<*package>
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{esint}
%    \end{macrocode}
%To redifine symbols
%    \begin{macrocode}
\DeclareOption{intlimits}{\let\ilimits@\displaylimits}
\DeclareOption{nointlimits}{\let\ilimits@\nolimits}
\ExecuteOptions{nointlimits}
\ProcessOptions
\def\re@DeclareMathSymbol#1#2#3#4{%
        \let#1=\undefined
        \DeclareMathSymbol{#1}{#2}{#3}{#4}}
%    \end{macrocode}
%Definition of the symbol font:
%    \begin{macrocode}
\DeclareSymbolFont{largesymbolsA}{U}{esint}{m}{n}
%    \end{macrocode}
%Definition of the new symbols:
%    \begin{macrocode}
\re@DeclareMathSymbol{\intop}{\mathop}{largesymbolsA}{'001}
        \def\int{\intop\ilimits@}
\re@DeclareMathSymbol{\iintop}{\mathop}{largesymbolsA}{'003}
        \def\iint{\iintop\ilimits@}
\re@DeclareMathSymbol{\iiintop}{\mathop}{largesymbolsA}{'005}
        \def\iiint{\iiintop\ilimits@}
\re@DeclareMathSymbol{\iiiintop}{\mathop}{largesymbolsA}{'007}
        \def\iiiint{\iiiintop\ilimits@}
\re@DeclareMathSymbol{\dotsintop}{\mathop}{largesymbolsA}{'011}
        \def\dotsint{\dotsintop\ilimits@}
\re@DeclareMathSymbol{\ointop}{\mathop}{largesymbolsA}{'013}
        \def\oint{\ointop\ilimits@}
\re@DeclareMathSymbol{\oiintop}{\mathop}{largesymbolsA}{'015}
        \def\oiint{\oiintop\ilimits@}
\re@DeclareMathSymbol{\sqintop}{\mathop}{largesymbolsA}{'017}
        \def\sqint{\sqintop\ilimits@}
\re@DeclareMathSymbol{\sqiintop}{\mathop}{largesymbolsA}{'021}
        \def\sqiint{\sqiintop\ilimits@}
\re@DeclareMathSymbol{\ointctrclockwiseop}{\mathop}{largesymbolsA}{'027}
        \def\ointctrclockwise{\ointctrclockwiseop\ilimits@}
\re@DeclareMathSymbol{\ointclockwiseop}{\mathop}{largesymbolsA}{'031}
        \def\ointclockwise{\ointclockwiseop\ilimits@}
\re@DeclareMathSymbol{\varointclockwiseop}{\mathop}{largesymbolsA}{'033}
        \def\varointclockwise{\varointclockwiseop\ilimits@}
\re@DeclareMathSymbol{\varointctrclockwiseop}{\mathop}{largesymbolsA}{'035}
        \def\varointctrclockwise{\varointctrclockwiseop\ilimits@}
\re@DeclareMathSymbol{\fintop}{\mathop}{largesymbolsA}{'037}
        \def\fint{\fintop\ilimits@}
\re@DeclareMathSymbol{\varoiintop}{\mathop}{largesymbolsA}{'041}
        \def\varoiint{\varoiintop\ilimits@}
\re@DeclareMathSymbol{\landupintop}{\mathop}{largesymbolsA}{'043}
        \def\landupint{\landupintop\ilimits@}
\re@DeclareMathSymbol{\landdownintop}{\mathop}{largesymbolsA}{'045}
        \def\landdownint{\landdownintop\ilimits@}
\let\idotsint\dotsint
%    \end{macrocode}
%    \begin{macrocode}
%</package>
%    \end{macrocode}
%    \begin{macrocode}
%<*fdfile>
%    \end{macrocode}
%Font definition file:
%    \begin{macrocode}
\ProvidesFile{uesint.fd}
\DeclareFontFamily{U}{esint}{}
\DeclareFontShape{U}{esint}{m}{n}{
   <-> esint10
   }{}
%    \end{macrocode}
%    \begin{macrocode}
%</fdfile>
%    \end{macrocode}
%\end{document}
%    \begin{macrocode}
%<*mffile>
% Computer Modern Math Extension 10 point
% Integral signs Eddie Saudrais
%
if unknown cmbase: input cmbase fi

font_identifier:="ESINT"; font_size 10pt#;

u#:=20/36pt#;      % unit width
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
tdec#:=6u#;        % space between integrals signs (textstyle)
ddec#:=6.5u#;      % space between integrals signs (displaystyle)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
width_adj#:=0pt#;    % width adjustment for certain characters
serif_fit#:=0pt#;    % extra sidebar near lowercase serifs
cap_serif_fit#:=5/36pt#;  % extra sidebar near uppercase serifs
letter_fit#:=0pt#;    % extra space added to all sidebars

body_height#:=270/36pt#;  % height of tallest characters
asc_height#:=250/36pt#;    % height of lowercase ascenders
cap_height#:=246/36pt#;    % height of caps
fig_height#:=232/36pt#;    % height of numerals
x_height#:=155/36pt#;    % height of lowercase without ascenders
math_axis#:=90/36pt#;    % axis of symmetry for math symbols
bar_height#:=87/36pt#;    % height of crossbar in lowercase e
comma_depth#:=70/36pt#;    % depth of comma below baseline
desc_depth#:=70/36pt#;    % depth of lowercase descenders

crisp#:=0pt#;      % diameter of serif corners
tiny#:=8/36pt#;      % diameter of rounded corners
fine#:=7/36pt#;      % diameter of sharply rounded corners
thin_join#:=7/36pt#;    % width of extrafine details
hair#:=9/36pt#;      % lowercase hairline breadth
stem#:=25/36pt#;    % lowercase stem breadth
curve#:=30/36pt#;    % lowercase curve breadth
ess#:=27/36pt#;      % breadth in middle of lowercase s
flare#:=33/36pt#;    % diameter of bulbs or breadth of terminals
dot_size#:=38/36pt#;    % diameter of dots
cap_hair#:=11/36pt#;    % uppercase hairline breadth
cap_stem#:=32/36pt#;    % uppercase stem breadth
cap_curve#:=37/36pt#;    % uppercase curve breadth
cap_ess#:=35/36pt#;    % breadth in middle of uppercase s
rule_thickness#:=.4pt#;    % thickness of lines in math symbols

dish#:=1/36pt#;      % amount erased at top or bottom of serifs
bracket#:=20/36pt#;    % vertical distance from serif base to tangent
jut#:=28/36pt#;      % protrusion of lowercase serifs
cap_jut#:=37/36pt#;    % protrusion of uppercase serifs
beak_jut#:=10/36pt#;    % horizontal protrusion of beak serifs
beak#:=70/36pt#;    % vertical protrusion of beak serifs
vair#:=8/36pt#;      % vertical diameter of hairlines
notch_cut#:=10pt#;    % maximum breadth above or below notches
bar#:=11/36pt#;      % lowercase bar thickness
slab#:=11/36pt#;    % serif and arm thickness
cap_bar#:=11/36pt#;    % uppercase bar thickness
cap_band#:=11/36pt#;    % uppercase thickness above/below lobes
cap_notch_cut#:=10pt#;    % max breadth above/below uppercase notches
serif_drop#:=4/36pt#;    % vertical drop of sloped serifs
stem_corr#:=1/36pt#;    % for small refinements of stem breadth
vair_corr#:=1/36pt#;    % for small refinements of hairline height
apex_corr#:=0pt#;    % extra width at diagonal junctions

o#:=8/36pt#;      % of overshoot for curves
apex_o#:=8/36pt#;    % amount of overshoot for diagonal junctions

slant:=0;      % tilt ratio $(\Delta x/\Delta y)$
fudge:=1;      % factor applied to weights of heavy characters
math_spread:=0;      % extra openness of math symbols
superness:=1/sqrt2;    % parameter for superellipses
superpull:=1/6;      % extra openness inside bowls
beak_darkness:=11/30;    % fraction of triangle inside beak serifs
ligs:=2;      % level of ligatures to be included

square_dots:=false;    % should dots be square?
hefty:=false;      % should we try hard not to be overweight?
serifs:=true;      % should serifs and bulbs be attached?
monospace:=false;    % should all characters have the same width?
variant_g:=false;    % should an italic-style g be used?
low_asterisk:=false;    % should the asterisk be centered at the axis?
math_fitting:=false;    % should math-mode spacing be used?

% the following font parameters are explained in {\sl The \TeX book}, Appendix G
fontdimen 8:  % parameters $\xi_8$ through $\xi_{13}$ will now be listed
 rule_thickness#,  % default\_rule\_thickness
 40/36pt#,    % big\_op\_spacing1
 60/36pt#,    % big\_op\_spacing2
 72/36pt#,    % big\_op\_spacing3
 216/36pt#,    % big\_op\_spacing4
 36/36pt#;    % big\_op\_spacing5

generate mathint      % switch to the driver file
%    \end{macrocode}
%    \begin{macrocode}
%</mffile>
%    \end{macrocode}
%    \begin{macrocode}
%<*mfmath>
% The Computer Modern Math-Extension family (by D. E. Knuth, 1979--1985)
% Integral signs by Eddie Saudrais 2002

font_coding_scheme:="TeX math extension"; %
mode_setup; font_setup;

define_pixels(tdec,ddec);

input bigint;  % large operators (integral signs)

font_x_height x_height#;
font_quad 18u#+4letter_fit#;
% (The calling file should give the other math extension font parameters.)
bye.
%    \end{macrocode}
%    \begin{macrocode}
%</mfmath>
%    \end{macrocode}
%    \begin{macrocode}
%<*mfsymbol>
% This file contains pairs of large operators for math extension fonts.

% Each operator has a `{\tt\char`\\textstyle}' form, for math in text,
% and a `{\tt\char`\\displaystyle}' form, for displayed formulas.

charlist oct"001": oct"002";  % integral signs
charlist oct"003": oct"004";  % double integral signs
charlist oct"005": oct"006";  % triple integral signs
charlist oct"007": oct"010";  % fourth integral signs
charlist oct"011": oct"012";  % dots integral signs
charlist oct"013": oct"014";  % contour integral signs
charlist oct"015": oct"016";  % contour double integral signs
charlist oct"017": oct"020";  % square integral signs
charlist oct"021": oct"022";  % square double integral signs
%charlist oct"023": oct"024";  % contour triple integral signs % later (usefull?)
%charlist oct"025": oct"026";  % square triple integral signs % later (usefull?)
charlist oct"027": oct"030";  % right arrow up contour integral signs
charlist oct"031": oct"032";  % left arrow up contour integral signs
charlist oct"033": oct"034";  % right arrow down contour integral signs
charlist oct"035": oct"036";  % left arrow down contour integral signs
charlist oct"037": oct"040";  % functional integral signs
charlist oct"041": oct"042";  % alternate contour double integral signs
charlist oct"043": oct"044";  % landau up integral sign
charlist oct"045": oct"046";  % landau down integral sign

cmchar "\textstyle integral sign";
beginchar(oct"001",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle double integral sign";
beginchar(oct"003",12u#+tdec#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=tdec;y0=0;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos10(curve,0); pos20(hair,0); pos30(vair,90);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
pos70(vair,-90); pos80(hair,-180); pos90(curve,-180);
rt x1r=hround(w-u-tdec); x9=w-tdec-x1; x7=w-tdec-x3=3u;
x90=x9+tdec;x70=x7+tdec;
y90=y9;y80=y8;y70=y7;
x10=x1+tdec;x30=x3+tdec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5tdec-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle triple integral sign";
beginchar(oct"005",12u#+2tdec#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=tdec;y0=0;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos10(curve,0); pos20(hair,0); pos30(vair,90);
pos100(curve,0); pos200(hair,0); pos300(vair,90);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
pos70(vair,-90); pos80(hair,-180); pos90(curve,-180);
pos700(vair,-90); pos800(hair,-180); pos900(curve,-180);
rt x1r=hround(w-u-2tdec); x9=w-x1-2tdec; x7=w-2tdec-x3=3u;
x900=x90+tdec=x9+2tdec;x700=x70+tdec=x7+2tdec;
y900=y90=y9;y800=y80=y8;y700=y70=y7;
x100=x10+tdec=x1+2tdec;x300=x30+tdec=x3+2tdec;
y100=y10=y1;y300=y30=y3;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-tdec-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
bulb(300,200,100); bulb(700,800,900);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
filldraw haut shifted 2z0;
filldraw bas shifted 2z0;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle fourth integral sign";
beginchar(oct"007",12u#+3tdec#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=tdec;y0=0;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos10(curve,0); pos20(hair,0); pos30(vair,90);
pos100(curve,0); pos200(hair,0); pos300(vair,90);
pos150(curve,0); pos250(hair,0); pos350(vair,90);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
pos70(vair,-90); pos80(hair,-180); pos90(curve,-180);
pos700(vair,-90); pos800(hair,-180); pos900(curve,-180);
pos750(vair,-90); pos850(hair,-180); pos950(curve,-180);
rt x1r=hround(w-u-3tdec); x9=w-x1-3tdec; x7=w-3tdec-x3=3u;
x950=x900+tdec=x90+2tdec=x9+3tdec;
x750=x700+tdec=x70+2tdec=x7+3tdec;
y950=y900=y90=y9;y850=y800=y80=y8;y750=y700=y70=y7;
x150=x100+tdec=x10+2tdec=x1+3tdec;
x350=x300+tdec=x30+2tdec=x3+3tdec;
y150=y100=y10=y1;y350=y300=y30=y3;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-1.5tdec-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
bulb(300,200,100); bulb(700,800,900);
bulb(350,250,150); bulb(750,850,950);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
filldraw haut shifted 2z0;
filldraw bas shifted 2z0;
filldraw haut shifted 3z0;
filldraw bas shifted 3z0;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle integral sign";
beginchar(oct"002",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle double integral sign";
beginchar(oct"004",18u#+ddec#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=ddec;y0=0;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos10(bulb_size,0); pos20(hair,0); pos30(vair,90);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
pos70(vair,-90); pos80(hair,-180); pos90(bulb_size,-180);
rt x1r=hround(w-u-ddec); x9=w-x1-ddec; x7=w-x3-ddec=3u;
x90=x9+ddec; x70=x7+ddec;
y90=y9;y70=y7;y80=y8;
x10=x1+ddec;x30=x3+ddec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5ddec-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle triple integral sign";
beginchar(oct"006",18u#+2ddec#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=ddec;y0=0;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos10(bulb_size,0); pos20(hair,0); pos30(vair,90);
pos100(bulb_size,0); pos200(hair,0); pos300(vair,90);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
pos70(vair,-90); pos80(hair,-180); pos90(bulb_size,-180);
pos700(vair,-90); pos800(hair,-180); pos900(bulb_size,-180);
rt x1r=hround(w-u-2ddec); x9=w-x1-2ddec; x7=w-x3-2ddec=3u;
x90=x9+ddec; x70=x7+ddec;
x900=x90+ddec; x700=x70+ddec;
y900=y90=y9;y700=y70=y7;y800=y80=y8;
x10=x1+ddec;x30=x3+ddec;
x100=x10+ddec;x300=x30+ddec;
y100=y10=y1;y300=y30=y3;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-ddec-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
bulb(300,200,100); bulb(700,800,900);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
filldraw haut shifted 2z0;
filldraw bas shifted 2z0;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle fourth integral sign";
beginchar(oct"010",18u#+3ddec#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=ddec;y0=0;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos10(bulb_size,0); pos20(hair,0); pos30(vair,90);
pos100(bulb_size,0); pos200(hair,0); pos300(vair,90);
pos150(bulb_size,0); pos250(hair,0); pos350(vair,90);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
pos70(vair,-90); pos80(hair,-180); pos90(bulb_size,-180);
pos700(vair,-90); pos800(hair,-180); pos900(bulb_size,-180);
pos750(vair,-90); pos850(hair,-180); pos950(bulb_size,-180);
rt x1r=hround(w-u-3ddec); x9=w-x1-3ddec; x7=w-x3-3ddec=3u;
x950=x900+ddec=x90+2ddec=x9+3ddec;
x750=x700+ddec=x70+2ddec=x7+3ddec;
y950=y900=y90=y9;y750=y700=y70=y7;y800=y80=y8;
x150=x100+ddec=x10+2ddec=x1+3ddec;
x350=x300+ddec=x30+2ddec=x3+3ddec;
y150=y100=y10=y1;y350=y300=y30=y3;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-1.5ddec-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
bulb(300,200,100); bulb(700,800,900);
bulb(350,250,150); bulb(750,850,950);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
filldraw haut shifted 2z0;
filldraw bas shifted 2z0;
filldraw haut shifted 3z0;
filldraw bas shifted 3z0;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle dots integral sign";
beginchar(oct"011",12u#+3tdec#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
path rond;
x0=tdec;y0=0;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos150(curve,0); pos250(hair,0); pos350(vair,90);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
pos750(vair,-90); pos850(hair,-180); pos950(curve,-180);
rt x1r=hround(w-u-3tdec); x9=w-x1-3tdec; x7=w-3tdec-x3=3u;
x950=x9+3tdec;x750=x7+3tdec;
y950=y9;y850=y8;y750=y7;
x150=x1+3tdec;x350=x3+3tdec;
y150=y1;y350=y3;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-1.5tdec-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(350,250,150); bulb(750,850,950);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted 3z0;
filldraw bas shifted 3z0;
pickup fine.nib;
numeric dot_diam#; dot_diam#=dot_size#;
define_whole_blacker_pixels(dot_diam);
pos51(dot_diam,0);pos52(dot_diam,90);
lft x51l=hround(.5w-.5dot_diam);
y52=y5;
z51=z52;
rond:=z51l..z52l..z51r..z52r..cycle;
filldraw rond shifted -.75z0;
filldraw rond;
filldraw rond shifted .75z0;
penlabels(1,2,3,4,5,6,7,8,9,150); endchar;

cmchar "\displaystyle dots integral sign";
beginchar(oct"012",18u#+3ddec#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
path rond;
x0=ddec;y0=0;
x99=tdec;y99=0;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos150(bulb_size,0); pos250(hair,0); pos350(vair,90);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
pos750(vair,-90); pos850(hair,-180); pos950(bulb_size,-180);
rt x1r=hround(w-u-3ddec); x9=w-x1-3ddec; x7=w-x3-3ddec=3u;
x950=x9+3ddec;
x750=x7+3ddec;
y950=y9;y750=y7;
x150=x1+3ddec;
x350=x3+3ddec;
y150=y100=y10=y1;y350=y300=y30=y3;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-1.5ddec-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(350,250,150); bulb(750,850,950);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted 3z0;
filldraw bas shifted 3z0;
pickup fine.nib;
numeric dot_diam#; dot_diam#=dot_size#;
define_whole_blacker_pixels(dot_diam);
pos51(dot_diam,0);pos52(dot_diam,90);
lft x51l=hround(.5w-.5dot_diam);
y52=y5;
z51=z52;
rond:=z51l..z52l..z51r..z52r..cycle;
filldraw rond shifted -.75z99;
filldraw rond;
filldraw rond shifted .75z99;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle contour integral sign";
beginchar(oct"013",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle contour double integral sign";
beginchar(oct"015",12u#+tdec#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=tdec;y0=0;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos10(curve,0); pos20(hair,0); pos30(vair,90);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
pos70(vair,-90); pos80(hair,-180); pos90(curve,-180);
rt x1r=hround(w-u-tdec); x9=w-tdec-x1; x7=w-tdec-x3=3u;
x90=x9+tdec;x70=x7+tdec;
y90=y9;y80=y8;y70=y7;
x10=x1+tdec;x30=x3+tdec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5tdec-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
pickup rule.nib; autorounded;
z50=z5+.5z0;
x51=x54=x50-.55tdec;
x52=x53=x50+.55tdec;
y51=y52=y50+.35(w-tdec);
y53=y54=y50-.35(w-tdec);
draw z51..z52;
draw z53..z54;
z55=.5[z54,z51]; z56=.5[z53,z52];
draw halfcircle scaled .7(w-tdec) rotated 90 shifted z55 ;
draw halfcircle scaled .7(w-tdec) rotated -90 shifted z56 ;
penlabels(1,2,3,4,5,6,7,8,9,51,52,53,54,55,56,50); endchar;


cmchar "\displaystyle contour integral sign";
beginchar(oct"014",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle contour double integral sign";
beginchar(oct"016",18u#+ddec#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=ddec;y0=0;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos10(bulb_size,0); pos20(hair,0); pos30(vair,90);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
pos70(vair,-90); pos80(hair,-180); pos90(bulb_size,-180);
rt x1r=hround(w-u-ddec); x9=w-x1-ddec; x7=w-x3-ddec=3u;
x90=x9+ddec; x70=x7+ddec;
y90=y9;y70=y7;y80=y8;
x10=x1+ddec;x30=x3+ddec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5ddec-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
pickup rule.nib; autorounded;
z50=z5+.5z0;
x51=x54=x50-.55ddec;
x52=x53=x50+.55ddec;
y51=y52=y50+.35(w-ddec);
y53=y54=y50-.35(w-ddec);
draw z51..z52;
draw z53..z54;
z55=.5[z54,z51]; z56=.5[z53,z52];
draw halfcircle scaled .7(w-ddec) rotated 90 shifted z55 ;
draw halfcircle scaled .7(w-ddec) rotated -90 shifted z56 ;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle square integral sign";
beginchar(oct"017",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
x51=x52=x5+.35w;
x53=x54=x5-.35w;
y51=y54=y5+.35w;
y52=y53=y5-.35w;
draw z51--z52--z53--z54--cycle;
penlabels(1,2,3,4,5,6,7,8,9,51,52,53,54); endchar;

cmchar "\displaystyle square integral sign";
beginchar(oct"020",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
x51=x52=x5+.35w;
x53=x54=x5-.35w;
y51=y54=y5+.35w;
y52=y53=y5-.35w;
draw z51--z52--z53--z54--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle square double integral sign";
beginchar(oct"021",12u#+tdec#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=tdec;y0=0;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos10(curve,0); pos20(hair,0); pos30(vair,90);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
pos70(vair,-90); pos80(hair,-180); pos90(curve,-180);
rt x1r=hround(w-u-tdec); x9=w-tdec-x1; x7=w-tdec-x3=3u;
x90=x9+tdec;x70=x7+tdec; % on décalle de 10u
y90=y9;y80=y8;y70=y7;
x10=x1+tdec;x30=x3+tdec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5tdec-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
pickup rule.nib; autorounded;
z50=z5+.5z0; % au milieu
x51=x54=x50-.55tdec-.35(w-tdec);
x52=x53=x50+.55tdec+.35(w-tdec);
y51=y52=y50+.35(w-tdec);
y53=y54=y50-.35(w-tdec);
draw z51--z52--z53--z54--cycle;
penlabels(1,2,3,4,5,6,7,8,9,51,52,53,54,55,56,50); endchar;

cmchar "\displaystyle square double integral sign";
beginchar(oct"022",18u#+ddec#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=ddec;y0=0;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos10(bulb_size,0); pos20(hair,0); pos30(vair,90);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
pos70(vair,-90); pos80(hair,-180); pos90(bulb_size,-180);
rt x1r=hround(w-u-ddec); x9=w-x1-ddec; x7=w-x3-ddec=3u;
x90=x9+ddec; x70=x7+ddec;
y90=y9;y70=y7;y80=y8;
x10=x1+ddec;x30=x3+ddec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5ddec-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
pickup rule.nib; autorounded;
z50=z5+.5z0;
x51=x54=x50-.55ddec-.35(w-ddec);
x52=x53=x50+.55ddec+.35(w-ddec);
y51=y52=y50+.35(w-ddec);
y53=y54=y50-.35(w-ddec);
draw z51--z52--z53--z54--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle right arrow up contour integral sign";
beginchar(oct"027",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
x0=.345w;y0=.05w;
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51-.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9,51,52,53); endchar;

cmchar "\displaystyle right arrow up contour integral sign";
beginchar(oct"030",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
x0=.345w;y0=.05w;
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51-.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9,51,52,53); endchar;


cmchar "\textstyle left arrow up contour integral sign";
beginchar(oct"031",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
x0=-.345w;y0=.05w;
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51-.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle left arrow up contour integral sign";
beginchar(oct"032",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
x0=-.345w;y0=.05w;
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51-.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle right arrow down contour integral sign";
beginchar(oct"033",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
x0=.345w;y0=-.05w;
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,-90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51+.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle right arrow down contour integral sign";
beginchar(oct"034",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
x0=.345w;y0=-.05w;
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,-90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51+.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle left arrow down contour integral sign";
beginchar(oct"035",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
x0=-.345w;y0=-.05w;
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,-90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51+.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle left arrow down contour integral sign";
beginchar(oct"036",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
x0=-.345w;y0=-.05w;
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw fullcircle scaled .7w shifted z5;  % contour
z51=z5+z0;
pos51(1.35rule_thickness,-90);pos52(1.2vair,135);pos53(1.2vair,45);
y52=y53=y51+.165w;
x52=x51-.16w;
x53=x51+.16w;
pickup fine.nib;
filldraw z52l--z51l--z51r--z52r--cycle;
filldraw z53r--z51r--z51l--z53l--cycle;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\textstyle functional integral sign";
beginchar(oct"037",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib;
y10=y5;
x10=x9l;x11=x1l;
y11-y10=.102(y3-y7);
cutdraw z10..z11;
penlabels(1,2,3,4,5,6,7,8,9); endchar;

cmchar "\displaystyle functional integral sign";
beginchar(oct"040",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib;
y10=y5;
x10=x9l;x5=.5[x10,x11];
y11-y10=.102(y3-y7);
cutdraw z10..z11;
penlabels(1,2,3,4,5,6,7,8,9); endchar;



cmchar "\textstyle alternate contour double integral sign";
beginchar(oct"041",12u#+tdec#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=tdec;y0=0;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos10(curve,0); pos20(hair,0); pos30(vair,90);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
pos70(vair,-90); pos80(hair,-180); pos90(curve,-180);
rt x1r=hround(w-u-tdec); x9=w-tdec-x1; x7=w-tdec-x3=3u;
x90=x9+tdec;x70=x7+tdec;
y90=y9;y80=y8;y70=y7;
x10=x1+tdec;x30=x3+tdec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5tdec-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
pickup rule.nib; autorounded;
z50=z5+.5z0;
draw fullcircle scaled .55w shifted z50;  % contour
penlabels(1,2,3,4,5,6,7,8,9); endchar;


cmchar "\displaystyle alternate contour double integral sign";
beginchar(oct"042",18u#+ddec#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
path haut;
path bas;
x0=ddec;y0=0;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos10(bulb_size,0); pos20(hair,0); pos30(vair,90);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
pos70(vair,-90); pos80(hair,-180); pos90(bulb_size,-180);
rt x1r=hround(w-u-ddec); x9=w-x1-ddec; x7=w-x3-ddec=3u;
x90=x9+ddec; x70=x7+ddec;
y90=y9;y70=y7;y80=y8;
x10=x1+ddec;x30=x3+ddec;
y10=y1;y30=y3;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5ddec-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
bulb(30,20,10); bulb(70,80,90);
haut:=stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
bas:=stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
filldraw haut;
filldraw bas;
filldraw haut shifted z0;
filldraw bas shifted z0;
pickup rule.nib; autorounded;
z50=z5+.5z0;
draw fullcircle scaled .65w shifted z50;  % contour
penlabels(1,2,3,4,5,6,7,8,9); endchar;


cmchar "\textstyle landau up integral sign";
beginchar(oct"043",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw halfcircle scaled .5w shifted z5;  % contour
y10=y11=y12=y13=y5;
x11+.25w=x12-.25w=x5;
x10+2u=x11;
x13-2u=x12;
cutdraw z10--z11;
cutdraw z12--z13;
penlabels(1,2,3,4,5,6,7,8,9,10,11,12,13); endchar;


cmchar "\displaystyle landau up integral sign";
beginchar(oct"044",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw halfcircle scaled .5w shifted z5;  % contour
y10=y11=y12=y13=y5;
x11+.25w=x12-.25w=x5;
x10+3u=x11;
x13-3u=x12;
cutdraw z10--z11;
cutdraw z12--z13;
penlabels(1,2,3,4,5,6,7,8,9,10,11,12,13); endchar;


cmchar "\textstyle landau down integral sign";
beginchar(oct"045",12u#,0,100/54dh#);
italcorr 3.5u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
pos1(curve,0); pos2(hair,0); pos3(vair,90); pos4(stem,180);
pos5(curve,180); pos5'(curve,0); z5'=z5; pos6(stem,0);
pos7(vair,-90); pos8(hair,-180); pos9(curve,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=1.2u; lft x5r=hround(.5w-.5curve);
top y3r=0; bot y7r=-d; y9-.5curve=vround(top y7l+.25curve);
y3-y1=y9-y7; y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw halfcircle  scaled .5w rotated 180 shifted z5;  % contour
y10=y11=y12=y13=y5;
x11+.25w=x12-.25w=x5;
x10+2u=x11;
x13-2u=x12;
cutdraw z10--z11;
cutdraw z12--z13;
penlabels(1,2,3,4,5,6,7,8,9); endchar;


cmchar "\displaystyle landau down integral sign";
beginchar(oct"046",18u#,0,200/54dh#);
italcorr 8u#; % \TeX\ kerning between upper limit and lower limit
adjust_fit(0,-ic#); pickup fine.nib;
numeric bulb_size, max_size;
bulb_size=hround(bold+dw); max_size=hround(bold+2dw);
pos1(bulb_size,0); pos2(hair,0); pos3(vair,90); pos4(bold,180);
pos5(max_size,180); pos5'(max_size,0); z5'=z5; pos6(bold,0);
pos7(vair,-90); pos8(hair,-180); pos9(bulb_size,-180);
rt x1r=hround(w-u); x9=w-x1; x7=w-x3=3u;
x5=.5[x4,x6]; x4-x6=4.8u; lft x5r=hround(.5w-.5max_size);
top y3r=0; bot y7r=-d;
y9-.5bulb_size=vround(top y7l+.25bulb_size); y3-y1=y9-y7;
y5=.5[y3,y7]=.5[y4,y6]; y4-y6=.6(y3-y7);
bulb(3,2,1); bulb(7,8,9);  % bulbs
filldraw stroke z3e{left}...z4e{(z5e-z4e)xscaled 1.1}
 ..tension atleast 1 and atleast .8..{z5-z4}z5e;  % upper stem
filldraw stroke z5'e{z6-z5}..tension atleast.8 and atleast 1
 ..{(z6e-z5'e)xscaled 1.1}z6e...{left}z7e;  % lower stem
pickup rule.nib; autorounded;
draw halfcircle scaled .5w  rotated 180 shifted z5;  % contour
y10=y11=y12=y13=y5;
x11+.25w=x12-.25w=x5;
x10+3u=x11;
x13-3u=x12;
cutdraw z10--z11;
cutdraw z12--z13;
penlabels(1,2,3,4,5,6,7,8,9,10,11,12,13); endchar;
%    \end{macrocode}
%    \begin{macrocode}
%</mfsymbol>
%    \end{macrocode}
%\Finale