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authorKarl Berry <karl@freefriends.org>2019-08-20 20:44:55 +0000
committerKarl Berry <karl@freefriends.org>2019-08-20 20:44:55 +0000
commitcbb5e2fbb4d58170c4b508755e2b104192a48966 (patch)
tree7933e512838e528c354d23192160ff5b112263d7 /Master/texmf-dist/doc/latex/tikz-feynhand
parentb91f083eda084808b59b93d32baee2e9d1abd7fa (diff)
tikz-feynhand (20aug19)
git-svn-id: svn://tug.org/texlive/trunk@51915 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/doc/latex/tikz-feynhand')
-rw-r--r--Master/texmf-dist/doc/latex/tikz-feynhand/README.md4
-rw-r--r--Master/texmf-dist/doc/latex/tikz-feynhand/changes.txt321
-rw-r--r--Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.pdfbin328649 -> 333745 bytes
-rw-r--r--Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.tex72
4 files changed, 128 insertions, 269 deletions
diff --git a/Master/texmf-dist/doc/latex/tikz-feynhand/README.md b/Master/texmf-dist/doc/latex/tikz-feynhand/README.md
index 7bbc79383ba..0f0b848fb6f 100644
--- a/Master/texmf-dist/doc/latex/tikz-feynhand/README.md
+++ b/Master/texmf-dist/doc/latex/tikz-feynhand/README.md
@@ -23,7 +23,7 @@ with many examples and a 5-minute introduction to TikZ.
3. tikzfeynhand.keys.code.tex - defines Tikz keys
4. tikz-feynhand.userguide.pdf - a userguide for the package
5. tikz-feynhand.userguide.tex - the tex source of the userguide
-6. changes.txt - lists changes applied to Tikz-Feynman to obtain Tikz-FeynHand
+6. changes.txt - lists changes since last version
7. shell_escape.jpg - a TexWorks screenshot for the userguide
8. README.md - this file
@@ -32,7 +32,7 @@ with many examples and a 5-minute introduction to TikZ.
LICENSE
-------
-Copyright (C) 2018 Max Dohse
+Copyright (C) 2019 Max Dohse
Copyright (C) 2016 Joshua Ellis
This whole package (code and documentation)
diff --git a/Master/texmf-dist/doc/latex/tikz-feynhand/changes.txt b/Master/texmf-dist/doc/latex/tikz-feynhand/changes.txt
index 0b2d01e4c82..aad3cfddb78 100644
--- a/Master/texmf-dist/doc/latex/tikz-feynhand/changes.txt
+++ b/Master/texmf-dist/doc/latex/tikz-feynhand/changes.txt
@@ -1,281 +1,88 @@
LIST OF CHANGES
-by which this package tikz-feynhand (Version 1.0.0 of 2018/01/31)
+by which this package tikz-feynhand (Version 1.1.0 of 2019/08/19)
which is available at https://ctan.org/pkg/tikz-feynhand
-was obtained from the original package tikz-feynman (Version 1.1.0 of 2016/02/05)
-which is available at https://ctan.org/pkg/tikz-feynman
+was obtained from Version 1.0.0
==========================================================================
-The LICENSE has been changed from LPPL to GNU General Public Licence v3.
-
-The changes are rather minor:
-any reference to LuaTex has been removed,
-the definitions that are unnecessary
-for manual diagram creation have been removed,
-and some drawing styles have been added.
-
-In general, I REPLACED each occurence of the string "feynman" by "feynhand",
-in order to avoid clashes when both packages are loaded simultaneously,
-and most of these replacements are NOT listed individually below.
-Apart from that, the list below contains all changes to the best of my knowledge.
-
-The files tikzfeynman.patch.3.0.0.lua and tikzfeynman.patch.3.0.1.lua
-of the original package are not contained in the modified package,
-neither is the documentation of the original package.
-
-All file names and line numbers below refer to
-the files of the original package tikz-feynman (Version 1.1.0 of 2016/02/05).
+All file names and line numbers below refer to the files of Version 1.1.0.
==============================================
- FILE: tikz-feynman.sty
+ FILE: tikz-feynhand.sty
-+ general: package name changed
-+ line 32: removed \RequirePackage{ifluatex}
++ no changes
==============================================
- FILE: tikzlibraryfeynman.code.tex
+ FILE: tikzlibraryfeynhand.code.tex
-+ line 33: removed graphs,
-+ lines 38-48: removed \ifluatex ...
-+ lines 69-84: removed %Luatex warning ...
-+ lines 119-141: removed %% Override Lua ...
-+ line 159: removed \let\tikzfeynman@orig@graph=\graph
-+ lines 162+163: removed, inserted:
- \let\propag=\tikzfeynhand@commands@propag
- \let\propag=\propagator
-+ line 166: removed \tikz@lib@ignore@sizetrue
-+ lines 181-190: removed %% \feynmandiagram ...
-+ lines 266-282: removed %% Diagram ...
-+ lines 284-291: removed %% Graph ...
- inserted:
- %% Propagators
- \newcommand{\tikzfeynhand@commands@propag}[1][]{\draw [#1]}
-+ line 321: removed \pgfkeyslet{/tikzfeynman/rmomentum/.@cmd}...
-+ line 327: removed \pgfkeyslet{/tikzfeynman/rmomentum'/.@cmd}...
- inserted:
- % short versions of momentum styles
- \pgfkeyslet{/tikzfeynhand/rmomentum/.@cmd}{\tikzfeynhand@momentum@stdr}
- \pgfkeyslet{/tikzfeynhand/rmomentum'/.@cmd}{\tikzfeynhand@momentum@stdrp}
++ line 228: inserted:
- \pgfkeyslet{/tikzfeynhand/mom/.@cmd}{\tikzfeynhand@momentum@std}
- \pgfkeyslet{/tikzfeynhand/mom'/.@cmd}{\tikzfeynhand@momentum@stdp}
+%% Slash
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\tikzfeynhand@slash{%
+ \pgfutil@ifnextchar[{\tikzfeynhand@key@opt{slash@@}}
+ {\tikzfeynhand@key@opt{slash@@}[]}}
+\pgfkeyslet{/tikzfeynhand/slash/.@cmd}{\tikzfeynhand@slash}
- \pgfkeyslet{/tikzfeynhand/revmom/.@cmd}{\tikzfeynhand@momentum@stdr}
- \pgfkeyslet{/tikzfeynhand/revmom'/.@cmd}{\tikzfeynhand@momentum@stdrp}
+%% Backslash
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\def\tikzfeynhand@backslash{%
+ \pgfutil@ifnextchar[{\tikzfeynhand@key@opt{backslash@@}}
+ {\tikzfeynhand@key@opt{backslash@@}[]}}
+\pgfkeyslet{/tikzfeynhand/backslash/.@cmd}{\tikzfeynhand@backslash}
==============================================
- FILE: tikzfeynman.keys.code.tex
-
-+ line 22: inserted
- %% Lengths
- \newlength{\feynhanddotsize}
- \setlength{\feynhanddotsize}{1.5mm}
-
- \newlength{\feynhandblobsize}
- \setlength{\feynhandblobsize}{7.5mm}
-
- \newlength{\feynhandlinesize}
- \setlength{\feynhandlinesize}{0.5pt}
-
- \newlength{\feynhandarrowsize}
- \setlength{\feynhandarrowsize}{6pt}
-
- \newlength{\feynhandtopsep}
- \setlength{\feynhandtopsep}{18\feynhandlinesize}
-
- %% Colors
- \newcommand{\feynhandtopsepcolor}{white}
-
-
-+ line 117: replaced \pgfmetadecorationsegmentamplitude
- by 3 * \feynhandlinesize
-+ line 141: removed /tikzfeynman/medium,
-+ lines 145-206: removed %% Diagrams ...
-+ line 219, 258, 280:
- each removed /tikz/graphs/as={},
-+ line 224: replaced /tikz/minimum size=1.5mm,
- by /tikz/minimum size=\feynhanddotsize,
-+ line 225, 264, 337, 348:
- each inserted /tikz/line width = \feynhandlinesize,
-+ lines 230-236: replaced every occurrence of square dot
- by squaredot
-+ lines 238-245: replaced every occurrence of empty dot
- by ringdot
-+ lines 230-236: replaced every occurrence of crossed dot
- by crossdot
-+ line 249: replaced /tikz/minimum size=3mm,
- by /tikz/minimum size=2\feynhanddotsize,
-+ line 260: replaced /tikz/fill=none,
- by /tikz/fill,
-+ lines 261+275:
- each replaced /tikz/outer sep=0.5\pgflinewidth,
- by /tikz/outer sep={0.5*\the\feynhandlinesize},
-+ line 263: replaced /tikz/minimum size=0.75cm,
- by /tikz/minimum size=\feynhandblobsize,
-+ line 264: removed /tikz/pattern=north west lines,
-+ line 269: inserted /tikz/fill=black,
-+ line 270: inserted
- every ringblob@@/.style={
- },
- every ringblob/.style={/tikzfeynhand/every ringblob@@/.append style={#1}},
- ringblob/.style={
- /tikzfeynhand/every blob@@,
- /tikzfeynhand/every ringblob@@,
- /tikz/fill=white,
- },
- every NWblob@@/.style={
- },
- every NWblob/.style={/tikzfeynhand/every NWblob@@/.append style={#1}},
- NWblob/.style={
- /tikzfeynhand/every blob@@,
- /tikzfeynhand/every NWblob@@,
- /tikz/fill=none,
- /tikz/pattern=north west lines,
- },
- every NEblob@@/.style={
- },
- every NEblob/.style={/tikzfeynhand/every NEblob@@/.append style={#1}},
- NEblob/.style={
- /tikzfeynhand/every blob@@,
- /tikzfeynhand/every NEblob@@,
- /tikz/fill=none,
- /tikz/pattern=north east lines,
- },
- every grayblob@@/.style={
- },
- every grayblob/.style={/tikzfeynhand/every grayblob@@/.append style={#1}},
- grayblob/.style={
- /tikzfeynhand/every blob@@,
- /tikzfeynhand/every grayblob@@,
- /tikz/fill=gray!50!white,
- },
-+ line 288: replaced arrow size=1.5pt,
- by arrow size=\feynhandarrowsize,
-+ line 295: replaced xshift...
- by xshift=-0.166666\feynhandarrowsize,
-+ line 297: replaced inner sep=\tikzfeynman@arrow@size,
- by inner sep=0mm,
- minimum width = \tikzfeynhand@arrow@size,
-+ line 309: replaced xshift...
- by xshift=0.166666\feynhandarrowsize,
-+ line 316: replaced inner sep=\tikzfeynman@arrow@size,
- by inner sep=0mm,
- minimum width = \tikzfeynhand@arrow@size,
-+ line 343: inserted
- every top@@/.style={
- /tikz/preaction={draw=\feynhandtopsepcolor,line width=\feynhandtopsep}
- },
- every top/.style={/tikzfeynhand/every top@@/.append style={#1}},
- top/.style={
- /tikzfeynhand/every top@@,
- },
-
-+ lines 350-352: replaced amplitude= ...
- by amplitude=3\feynhandlinesize,
- segment length=7.5\feynhandlinesize,
-+ line 381: inserted /tikz/line width = \feynhandlinesize,
-+ lines 383-384: replaced amplitude= ...
- by amplitude=3\feynhandlinesize,
- segment length=7.5\feynhandlinesize,
-+ line 399: inserted /tikz/line width = \feynhandlinesize,
-+ line 435 replaced /tikz/thick,
- by /tikz/line width = 2\feynhandlinesize,
-+ line 442: inserted
- every charged ghost@@/.style={
- /tikz/draw=none,
- /tikz/decoration={name=none},
+ FILE: tikzfeynhand.keys.code.tex
+
++ line 629: inserted:
+
+ %% Slashes
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ slash/.search also={/tikzfeynhand,/tikz},
+ %% Parameters
+ slash/size/.store in=\tikzfeynhand@slash@size,
+ slash/size=5\feynhandlinesize,
+ slash/style/.store in=\tikzfeynhand@slash@style,
+ slash/style={},
+ %% Styles
+ slash@@/.style args={[#1]#2}{
+ /tikz/line width = \feynhandlinesize,
+ /tikz/decoration={
+ markings,
+ mark=at position #2 with {
+ \tikzfeynhandset{slash/.cd,#1}
+ \draw [\tikzfeynhand@slash@style] (-\tikzfeynhand@slash@size, -2*\tikzfeynhand@slash@size) -- (\tikzfeynhand@slash@size, 2*\tikzfeynhand@slash@size);
+ },
+ },
/tikz/postaction={
- /tikzfeynhand/with arrow=0.5,
+ /tikz/decorate=true,
},
},
- every charged ghost/.style={/tikzfeynhand/every charged ghost@@/.append style={#1}},
- charged ghost/.style={
- /tikzfeynhand/ghost,
- /tikzfeynhand/every charged ghost@@,
- },
- every anti charged ghost@@/.style={
- /tikz/draw=none,
- /tikz/decoration={name=none},
+ slash@@/.default={[]0.5},
+ %%
+ %% Backslashes
+ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ backslash/.search also={/tikzfeynhand,/tikz},
+ %% Parameters
+ backslash/size/.store in=\tikzfeynhand@backslash@size,
+ backslash/size=5\feynhandlinesize,
+ backslash/style/.store in=\tikzfeynhand@backslash@style,
+ backslash/style={},
+ %% Styles
+ backslash@@/.style args={[#1]#2}{
+ /tikz/line width = \feynhandlinesize,
+ /tikz/decoration={
+ markings,
+ mark=at position #2 with {
+ \tikzfeynhandset{backslash/.cd,#1}
+ \draw [\tikzfeynhand@backslash@style] (-\tikzfeynhand@backslash@size, 2*\tikzfeynhand@backslash@size) -- (\tikzfeynhand@backslash@size, -2*\tikzfeynhand@backslash@size);
+ },
+ },
/tikz/postaction={
- /tikzfeynhand/with reversed arrow=0.5,
+ /tikz/decorate=true,
},
},
- every anti charged ghost/.style={/tikzfeynhand/every anti charged ghost@@/.append style={#1}},
- anti charged ghost/.style={
- /tikzfeynhand/ghost,
- /tikzfeynhand/every anti charged scalar@@,
- },
-
-+ line 447, 459, 473, 486, 497, 520:
- each inserted /tikz/line width = \feynhandlinesize,
-+ line 501: replaced segment length=1.5mm
- by amplitude=3\feynhandlinesize,
- segment length=8\feynhandlinesize
-+ line 510: inserted:
- % short versions of style names
- pho/.style={
- /tikzfeynhand/photon,
- },
- bos/.style={
- /tikzfeynhand/boson,
- },
- antbos/.style={
- /tikzfeynhand/anti charged boson,
- },
- chabos/.style={
- /tikzfeynhand/charged boson,
- },
- sca/.style={
- /tikzfeynhand/scalar,
- },
- chasca/.style={
- /tikzfeynhand/charged scalar,
- },
- antsca/.style={
- /tikzfeynhand/anti charged scalar,
- },
- fer/.style={
- /tikzfeynhand/fermion,
- },
- antfer/.style={
- /tikzfeynhand/anti fermion,
- },
- gho/.style={
- /tikzfeynhand/ghost,
- },
- chagho/.style={
- /tikzfeynhand/charged ghost,
- },
- antgho/.style={
- /tikzfeynhand/anti charged ghost,
- },
- glu/.style={
- /tikzfeynhand/gluon,
- },
- maj/.style={
- /tikzfeynhand/majorana,
- },
- antmaj/.style={
- /tikzfeynhand/anti majorana,
- },
-
-+ line 515: replaced insertion/size=3pt,
- by insertion/size=5\feynhandlinesize,
-+ line 541: replaced momentum/arrow distance=3mm,
- by momentum/arrow distance={\the\feynhandarrowsize},
-+ line 548: inserted
- momentum/arrow thickness/.store in=\tikzfeynhand@momentum@arrow@thickness,
- momentum/arrow thickness={0.64*\the\feynhandlinesize},
- momentum/arrow size/.store in=\tikzfeynhand@momentum@arrow@size,
- momentum/arrow size={0.8*\the\feynhandarrowsize},
-+ lines 559, 573, 592, 613, 627, 646, 667, 681, 700, 721, 736, 756:
- each replaced \draw [-Stealth, \tikzfeynman@momentum@arrow@style]
- by \draw [-{Stealth[length=\tikzfeynhand@momentum@arrow@size]},
- line width=\tikzfeynhand@momentum@arrow@thickness,
- \tikzfeynhand@momentum@arrow@style]
-+ lines 772+776: each removed /tikz/looseness=1.5,
-+ lines 786-814: removed %% Graceful ...
-
+ backslash@@/.default={[]0.5},
diff --git a/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.pdf b/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.pdf
index 93389973c0d..29351270113 100644
--- a/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.pdf
+++ b/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.pdf
Binary files differ
diff --git a/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.tex b/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.tex
index ba00d93810f..25de1e773e6 100644
--- a/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.tex
+++ b/Master/texmf-dist/doc/latex/tikz-feynhand/tikz-feynhand.userguide.tex
@@ -2,7 +2,7 @@
%
% TikZ-FeynHand
% Feynman Diagrams with TikZ (LaTex manual version)
-% Copyright (C) 2018 Max Dohse
+% Copyright (C) 2019 Max Dohse
%
% available at https://ctan.org/pkg/tikz-feynhand
%
@@ -116,7 +116,7 @@
%
\hrule
\vspace{3mm}
-{\centering\Large\bfseries Quick Reference\\}
+{\centering\Large\bfseries Quick Reference\vspace{-2mm}\\}
%
\noindent
\textbf{Environment}\\
@@ -158,13 +158,13 @@ analogue:
\blucol\verb!\feynhandblobsize, \feynhandlinesize, \feynhandarrowsize, \feynhandtopsep!\txcol\\
\blucol\verb!\renewcommand{\feynhandtopsepcolor}{COLOR}!\txcol\\
\blucol\verb!\tikzfeynhandset{every STYLE={/tikz/color=COLOR},}!\txcol\\
-\vspace{1mm}
+\vspace{0mm}
%
% =====================================================================
\hrule
\vspace{2mm}
-{\centering Version 1.0.0 -
+{\centering Version 1.1.0 -
available at\qquad \texttt{https://ctan.org/pkg/tikz-feynhand}\\}
\vspace{1mm}
@@ -172,6 +172,7 @@ analogue:
\hrule
% ===== TABEL OF CONTENTS ===========================================
%
+\vspace{-2mm}
\tableofcontents
%
% =====================================================================
@@ -1334,7 +1335,7 @@ as in the following example.
\end{minipage}
%
% --------------------------------------------------------------------------------
-\newpage\subsubsection{Keys: In, Out, Looseness, Left/Right, Half/Quarter}
+\subsubsection{Keys: In, Out, Looseness, Left/Right, Half/Quarter}
\label{sec:_feynmandiagrams_keysinoutetc}
%
\noindent
@@ -1441,7 +1442,7 @@ with respect to the line's direction.
%
% --------------------------------------------------------------------------------
\vspace{-6mm}
-\subsubsection{Propagator labels and momentum arrows}
+\newpage\subsubsection{Propagator labels and momentum arrows}
\label{sec:_feynmandiagrams_proplabelsmomentum}
%
\noindent
@@ -1562,10 +1563,57 @@ at which the insertion marks are drawn.
\end{feynhand}
\end{tikzpicture}
\end{minipage}
+%
+% -------------------------------------------------------------------------------------------------------
+\vspace{-3mm}
+\subsubsection{Slashes and backslashes}
+\label{sec:_feynmandiagrams_propagators_slashes}
+%
+\noindent
+Back/slashes work like insertions:
+\\
+%
+\begin{minipage}{0.83\linewidth}
+\vercol\begin{verbatim}
+ \vertex [dot] (a1) at (0,0) {}; \vertex [dot] (a2) at (2,0) {};
+ \propag [chabos, red, slash=0.25, slash=0.75] (a1) to (a2);
+\end{verbatim}\txcol
+\end{minipage}
+%
+\begin{minipage}{0.16\linewidth}
+\tikzsetnextfilename{propag_slash_1}
+%\tikzset{external/force remake}
+\begin{tikzpicture}
+ \begin{feynhand}
+ \vertex [dot] (a1) at (0,0) {};
+ \vertex [dot] (a2) at (2,0) {};
+ \propag [chabos, red, slash=0.25, slash=0.75] (a1) to (a2);
+ \end{feynhand}
+\end{tikzpicture}
+\end{minipage}
+\\
+\begin{minipage}{0.83\linewidth}
+\vercol\begin{verbatim}
+ \vertex [ringdot] (a1) at (0,0) {}; \vertex [ringdot] (a2) at (2,0) {};
+ \propag [chabos, red, backslash={[size=6pt,style=Green]0.25}] (a1) to (a2);
+\end{verbatim}\txcol
+\end{minipage}
+%
+\begin{minipage}{0.16\linewidth}
+\tikzsetnextfilename{propag_slash_2}
+%\tikzset{external/force remake}
+\begin{tikzpicture}
+ \begin{feynhand}
+ \vertex [ringdot] (a1) at (0,0) {};
+ \vertex [ringdot] (a2) at (2,0) {};
+ \propag [chabos, red, backslash={[size=6pt,style=Green]0.25}] (a1) to (a2);
+ \end{feynhand}
+\end{tikzpicture}
+\end{minipage}
%
% -------------------------------------------------------------------------------------------------------
-\subsubsection{Crossing propagators (one on top of the other)}
+\newpage\subsubsection{Crossing propagators (one on top of the other)}
\label{sec:_feynmandiagrams_propagators_top}
%
\noindent
@@ -1584,7 +1632,7 @@ respectively \blucol\verb$with reversed arrow=VALUE$\txcol for antiparticles.
\blucol\verb$VALUE$\txcol must be a number between 0 and 1,
and indicates the fraction of propagator length at which TikZ inserts the arrow.
The default value of \blucol\verb$VALUE$\txcol is 0.5.
-\vspace{2mm}\\
+\vspace{-1mm}\\
%
\begin{minipage}{0.8\linewidth}
\blucol\begin{verbatim}
@@ -1607,6 +1655,7 @@ The default value of \blucol\verb$VALUE$\txcol is 0.5.
\end{feynhand}
\end{tikzpicture}
\end{minipage}
+\vspace{-5mm}
\\
%
\begin{minipage}{0.8\linewidth}
@@ -1629,6 +1678,7 @@ The default value of \blucol\verb$VALUE$\txcol is 0.5.
\end{feynhand}
\end{tikzpicture}
\end{minipage}
+\vspace{-3mm}
%
%
% =====================================================================
@@ -1749,7 +1799,8 @@ Same diagram (same TikZ/FeynHand code) drawn after setting:
\setlength{\feynhandarrowsize}{6pt}
\setlength{\feynhandtopsep}{18\feynhandlinesize}
\renewcommand{\feynhandtopsepcolor}{white}
-%
+\vspace{-4mm}
+\\
The color of a vertex/propagator style can be set for all subsequent diagrams
in the current local Tex group (e.g. document or equation, figure, minipage environment)
by the command \vercol\verb$\tikzfeynhandset$\txcol with the key \vercol\verb$every$\txcol:
@@ -1764,6 +1815,7 @@ by the command \vercol\verb$\tikzfeynhandset$\txcol with the key \vercol\verb$ev
% =====================================================================
% ===== APPENDICES ============================================
%
+%\newpage
\appendix
%
\section{TikZ Basics}
@@ -2049,7 +2101,7 @@ This should look somewhat like Figure~\ref{Fig:_shell_escape}.
%
\begin{figure}
\centering
- \includegraphics[width=0.75\linewidth]{shell_escape.jpg}
+ \includegraphics[width=0.7\linewidth]{shell_escape.jpg}
\caption{TexWorks screenshot.}
\label{Fig:_shell_escape}
\end{figure}