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+\documentclass[10pt]{article}
+
+\usepackage{feyn}
+
+\expandafter\ifx\csname useextended\endcsname\relax
+  \let\ff\feyn
+  \let\dd\Diagram
+\else
+  \let\ff\FEYN
+  \let\dd\DIAGRAM
+\fi
+
+\makeatletter
+\def\refptcirc{\lower\feyn@maxis \hbox to 0pt{\hss$\circ$\hss}}
+\makeatother
+\let\\\cr
+
+\parindent=0pt
+
+\begin{document}
+
+Alphabetically:
+
+\halign{#\hfil\quad&$\refptcirc\ff{#}$\cr
+a & a \\
+b & b \\
+c & c \\
+d & d \\
+e & e \\
+f & f \\
+g & g \\
+h & h \\
+i & i \\
+j & j \\
+k & k \\
+l & l \\
+m & m \\
+n & n \\
+o & o \\
+p & p \\
+q & q \\
+r & r \\
+s & s \\
+t & t \\
+u & u \\
+v & v \\
+w & w \\
+x & x \\
+y & y \\
+z & z \\
+}
+
+\vskip 2cm
+
+\newdimen\feynmod
+\makeatletter
+\feynmod=\feyn@module
+Dimensions: 
+Feyn module: \the\feyn@module,
+math-axis: \the\feyn@maxis.
+\makeatother
+
+\newpage
+
+With ligatures:
+\def\T{\tracingmacros=2 \tracingcommands=2 }
+
+\halign{&\vrule width 0pt height 1\feynmod #\hfil\quad&$\refptcirc\ff{#}$\qquad \cr
+a & a & aA & aA & aV & aV\\
+f & f      & fA & fA      & fV & \momentum{fV}{pk} \\
+fu & fu    & fuA & fuA    & fuV & \momentum{fuV}{pk} \\
+fd & fd    & fdA & fdA    & fdV & \momentum{fdV}{pk} \\
+fv & fv    & fvA & fvA    & fvV & \momentum{fvV}{pk} \\
+fl & fl    & flA & flA    & flV & \momentum{flV}{pk} \\
+flu & flu  & fluA & fluA  & fluV & \momentum{fluV}{pk} \\
+flS& flS   & flSA & flSA  & flSV & \momentum{flSV}{pk} \\
+flSu& flSu   & flSuA & flSuA  & flSuV & \momentum{flSuV}{pk} \\
+flo & flo    & floA & floA    & floV & \momentum{floV}{pk} \\
+fs & |fs| \\
+fs0 & |fs0| \\
+g & g      & gA & gA      & gV & \momentum{gV}{pk} \\
+gu & gu    & guA & guA    & guV & \momentum{guV}{pk} \\
+gd & gd    & gdA & gdA    & gdV & \momentum{gdV}{pk} \\
+gv & gv    & gvA & gvA    & gvV & \momentum{gvV}{pk} \\
+g1 & g1    & g1A & g1A    & g1V & \momentum{g1V}{pk} \\
+g2 & g2    & g2A & g2A    & g2V & \momentum{g2V}{pk} \\
+g3 & g3    & g3A & g3A    & g3V & \momentum{g3V}{pk} \\
+g4 & g4    & g4A & g4A    & g4V & \momentum{g4V}{pk} \\
+gl & gl    & glA & glA    & glV & \momentum{glV}{pk} \\
+glu & glu    & gluA & gluA    & gluV & \momentum{gluV}{pk} \\
+glB & glB \\
+glS & glS \\
+m & m    & mA & mA    & mV & \momentum{mV}{pk} \\
+ms & ms     & ms & \momentum{ms}{pk} \\
+h & h    & hA & hA    & hV & \momentum{hV}{pk} \\
+hu & hu    & huA & huA    & huV & \momentum{huV}{pk} \\
+hd & hd    & hdA & hdA    & hdV & \momentum{hdV}{pk} \\
+hs & hs     & hs & \momentum{hs}{pk} \\
+hl & hl & hlA & hlA & hlV & \momentum{hlV}{pk} \\
+hlu & hlu & hluA & hluA & hluV & \momentum{hluV}{pk} \\
+x & x     & x & \momentum{x}{pk} \\
+p & p     & P & \momentum{P}{pk} \\
+c & c     & c & \momentum{c}{pk} \\
+a & a     & A & A \\
+}
+
+\newpage
+
+\def\twice#1{#1 & #1 }
+
+\halign{&#\hfil\quad&$\refptcirc\ff{#}$\qquad\cr
+\twice{fs f gl gv f fs}&vertical gluon doesn't meet -- OK\\
+\twice{fs f glA gv f fs}\\
+\twice{fs fA glA gvV f fs}\\
+\twice{fs fA g1A gvV g2V fA fs}&vertical gluon meets\\
+\twice{msmA g1gvg2 msxf}&and here\\
+}
+
+\vskip10ex
+
+\textbf{More complicated diagrams}
+
+Fermion, gluon and ghost loop:
+\[
+\Diagram{\hline&fl flu \\
+\hline
+fsf g1 f&f g2 ffs \\
+\hline}
+\quad
+\Diagram{\hline&gl glu\\
+fsf g1 f&f g2 ffs \\}
+\quad
+\Diagram{\hline&hlA hluV \\
+fsf g1 f&f g2 ffs \\}
+\]
+
+\textbf{Annotations:}
+
+a: $\ff{!f1\momentum{fA}2}$ (arrow rightward)
+
+b: $\ff{f !{gluV}k f}$ (arrow leftward)
+\vskip 10ex
+
+c: $\ff{f !{g1A}1 \momentum{g2V}2 \momentum{g3A}3 \momentum{g4V}4 f}$
+(arrows are  1=right, 2=left, 3=right, 4=left)
+\vskip 10ex
+
+d: $\ff{\momentum{gl}a\momentum{gluV}b}$
+(arrow leftwards)
+\vskip 10ex
+
+e: $\ff{fs f \momentum{flA}{pk} \momentum{fluV}{pk} f fs}$
+(arrows right then left)
+\vskip 10ex
+
+f: $\ff{fs f \momentum{flSA}{pk} \momentum{flSuV}{pk} f fs}$
+\vskip 10ex
+
+g: $\ff{fflof\momentum{floV}{p}f\momentum{floA}{p}f}$
+
+%error: $\ff{\momentum{x}x}$
+
+\newpage
+
+Vertex Feynman diagram:
+\[
+\dd{\vertexlabel^a \\
+  fd \\
+& g\vertexlabel_{\mu,c} \\
+\vertexlabel_b fu \\
+}
+=
+\dd{\vertexlabel^a \\
+  fdA \\
+& gA\vertexlabel_{\mu,c} \\
+\vertexlabel_b fuV \\
+}
+=
+\dd{\momentum{fdA}a\\
+   & \vertexlabel_{\gamma_\mu} \momentum{gA}{\mu,c} \\
+\momentum{fuV}b
+}
+=
+ig\gamma_\mu (T^c)_{ab}
+\]
+
+Use of the `belowl' macro:
+\[
+\feyn{fd \belowl{fu} g
+  +
+  fA guA \belowl{fdA}
+}
+=
+\FEYN{fd \belowl{fu} g
+  +
+  fA guA \belowl{fdA}
+}
+\]
+
+Two-loop diagram:
+\[
+\ff{ff gl ff}
+\to
+\ff{ff\bigbosonloopA\smallbosonloopV ff}
+=
+\ff{!{fA}p f!{glBV}k !{glSA}l a\vertexlabel_{p+k-l} ff}
+\]
+
+Bremsstrahlung:
+\[
+  \dd{        & x \\
+                   & ![ulft]{gvV}{q=p'+k-p}   & !{guA}k \\
+           ![bot]{fA}p & ![bot]{fA}{p'+k} & ![lrt]{fA}{p'} \\
+        }
+        +
+  \dd{    & !{guA}k \\
+           !{fA}p & fs ![bot]{fA}{p-k} & !{fA}{p'} \\
+               &         & ![lrt]{gvA}{q=p'+k-p} \\
+               &         & x\\
+        }
+\]
+
+OPE:
+\def\bracket#1{\langle #1 \rangle}
+\begin{eqnarray*}
+-i\Sigma_{\mathrm{ope}} &=&
+     \left[\ff{faf + fsfglffs 
+                 + \cdots} \right] 1 \\
+     && \quad{}+ 
+           \left[ \ff{ fxfs0glfs0xf 
+                  + \cdots} \right]
+         \bracket{\overline\psi M \psi} \\
+     && \quad{}+ \left[
+         \dd{   &x  &x  \\
+                     &gv &gv \\
+                  fs &fs &fs \\} + \cdots
+         \right]
+         \bracket{G_{\mu\nu}^a G_{\mu\nu}^a}\\
+\end{eqnarray*}
+
+Complete vertex:
+\begin{eqnarray*}
+\ff{fcf} &=& \ff{faf + fpf + fpfpf + \cdots} \\
+    &=& \sum_{n=0}^\infty \ff{fA ( pfA)}^n \\
+    &=& \ff{\frac{fA}{1-(pfA)}}.
+\end{eqnarray*}
+
+\iffalse
+\halign{&#\hfil\quad&$\refptcirc\ff{#}$ \cr
+a & a \\
+c & c \\
+f & f \\
+F & F \\
+fs & fs \\
+fl & fl \\
+fu & fu \\
+fd & fd \\
+fv & fv \\
+f0 & f0 \\
+fs0 & fs0 \\
+g & g \\
+G & G \\
+gl & gl \\
+glu & glu \\
+$\backslash$ smallbosonloop & \smallbosonloop \\
+$\backslash$ bigbosonloop & \bigbosonloop \\
+gu & gu \\
+gd & gd \\
+gv & gv \\
+gvs & gvs \\
+gvb & gvb \\
+h & h \\
+hs & hs \\
+hu & hu \\
+hd & hd \\
+k & k \\
+l & l \\
+m & m \\
+ms & ms \\
+n & n \\
+o & o \\
+p & p \\
+x & x \\
+w & w \\
+%000 & \arrow000\\
+%00 45 & \arrow00{45}\\
+}
+\fi
+
+\end{document}