diff --git a/doc/tikz-ext-manual-en-library-calendar-plus.tex b/doc/tikz-ext-manual-en-library-calendar-plus.tex
index bdfd225..a9b4802 100644
--- a/doc/tikz-ext-manual-en-library-calendar-plus.tex
+++ b/doc/tikz-ext-manual-en-library-calendar-plus.tex
@@ -69,10 +69,12 @@ \subsection{Week numbering (ISO~8601)}
     %
 \begin{codeexample}[preamble={\usetikzlibrary{ext.calendar-plus}}]
 \tikz
-  \calendar [week list, month label above centered,
-             dates=2022-07-01 to 2022-07-31,
-             week label left,
-             every week/.append style={gray!50!black,font=\sffamily}];
+  \calendar[
+    week list, month label above centered,
+    dates=2022-07-01 to 2022-07-31,
+    week label left,
+    every week/.append style={
+      gray!50!black, font=\sffamily}];
 \end{codeexample}
     %
 \end{stylekey}
diff --git a/doc/tikz-ext-manual-en-library-misc.tex b/doc/tikz-ext-manual-en-library-misc.tex
index 227317e..87891a3 100644
--- a/doc/tikz-ext-manual-en-library-misc.tex
+++ b/doc/tikz-ext-manual-en-library-misc.tex
@@ -294,7 +294,7 @@ \subsection{\tikzname}
 \begin{multicols}{2}
 \begin{key}{/tikz/reverse clip=\meta{direction} (default counter clockwise)}
 This key installs a very big rectangle which is either constructed
-|counter clockwise| (like the \referencePathOperationandIndexO{circle}
+\texttt{counter clockwise} (like the \referencePathOperationandIndexO{circle}
 path operation) or |clockwise|.
 \end{key}
 \begin{key}{/tikz/clip rule=\meta{direction} (default even odd)}
diff --git a/doc/tikz-ext-manual-en-library-nodes.tex b/doc/tikz-ext-manual-en-library-nodes.tex
index 37d4f79..e30accf 100644
--- a/doc/tikz-ext-manual-en-library-nodes.tex
+++ b/doc/tikz-ext-manual-en-library-nodes.tex
@@ -22,13 +22,14 @@ \subsection{Pic as a node}
 for example as a label.
 \begin{codeexample}[preamble=\usetikzlibrary{ext.nodes, ext.misc}]
 \begin{tikzpicture}[
-  slsl/.pic={\draw (-2pt, 1.5pt) -- (2pt, .5pt)
-                   (2pt, -1.5pt) -- (-2pt, -.5pt);}]
-\node[draw, minimum width=3cm, minimum height=1cm,
-     label={[pic           ]  east:slsl},
-     label={[pic, rotate=90] north:slsl},
-     label={[pic            ] west:slsl},
-     label={[pic, rotate=-90]south:slsl}]{};
+  slsl/.pic={\draw(-2pt, 1.5pt)--( 2pt, .5pt)
+                  ( 2pt,-1.5pt)--(-2pt,-.5pt);}]
+\node[
+  draw, minimum width=3cm, minimum height=1cm,
+  label={[pic            ] east:slsl},
+  label={[pic, rotate= 90]north:slsl},
+  label={[pic            ] west:slsl},
+  label={[pic, rotate=-90]south:slsl}]{};
 \end{tikzpicture}
 \end{codeexample}
 \end{key}
diff --git a/doc/tikz-ext-manual-en-library-positioning-plus.tex b/doc/tikz-ext-manual-en-library-positioning-plus.tex
index 56c8137..a44041c 100644
--- a/doc/tikz-ext-manual-en-library-positioning-plus.tex
+++ b/doc/tikz-ext-manual-en-library-positioning-plus.tex
@@ -164,12 +164,12 @@ \subsection{Useful placement keys for vertical and horizontal alignment}
 \end{stylekey}
 \begin{stylekey}{/tikz/span vertical=\meta{list of coordinates}}
   Creates a rectangular node with the name |fit bounding box| that encompasses
-  the \meta{list of coordinates} \emph{and} sets the \referenceKeyandIndexO[/pgf]{minimum height} to
+  the \meta{list of coordinates} \emph{and} sets the \referenceKeyandIndexO[/pgf/]{minimum height} to
   the height of this bounding box.
 \end{stylekey}
 \begin{stylekey}{/tikz/span horizontal=\meta{list of coordinates}}
   Creates a rectangular node with the name |fit bounding box| that encompasses
-  the \meta{list of coordinates} \emph{and} sets the \referenceKeyandIndexO[/pgf]{minimum width} to
+  the \meta{list of coordinates} \emph{and} sets the \referenceKeyandIndexO[/pgf/]{minimum width} to
   the width of this bounding box.
 \end{stylekey}
 \begin{stylekey}{/tikz/span=\meta{list of coordinates}}
diff --git a/doc/tikz-ext-manual-en-main-body.tex b/doc/tikz-ext-manual-en-main-body.tex
index 12d96ca..198245b 100644
--- a/doc/tikz-ext-manual-en-main-body.tex
+++ b/doc/tikz-ext-manual-en-main-body.tex
@@ -8,10 +8,11 @@
 % 2. under the GNU Free Documentation License.
 %
 \newcommand*\tikzextname{Ti\textit kZ-Extensions}
-\newcommand*\tikzextversion{0.5}
+\newcommand*\tikzextversion{0.5.1}
 %\includeonly{
-%  tikz-ext-manual-en-library-misc,
-%  tikz-ext-manual-en-library-nodes,
+%%  tikz-ext-manual-en-library-misc,
+%%  tikz-ext-manual-en-library-nodes,
+%  tikz-ext-manual-en-pgf-arrows,
 %}
 \begin{document}
 {\colorlet{blue}{black}% links shall be black
@@ -126,6 +127,7 @@ \part{\pgfname\space Libraries}
 \end{codeexample}
 \end{center}
 
+\tikzsetfigurename{PGF.arrows}\include{tikz-ext-manual-en-pgf-arrows}
 \tikzsetfigurename{PGF.trans}\include{tikz-ext-manual-en-pgf-trans}
 \tikzsetfigurename{PGF.shapes}%
 \include{tikz-ext-manual-en-pgf-shapes-circlearrow}
@@ -180,6 +182,11 @@ \part{Changelog, Index \& References}
 \section*{Changelog}\addcontentsline{toc}{section}{Changelog}
 \begin{multicols}{2}\raggedright
 \noindent
+Version 0.5.1
+\begin{itemize}
+\item \addPGF{arrows}
+\item Bugfix to |ext.pgfkeys-plus|. \cite{GH6}
+\end{itemize}
 Version 0.5
 \begin{itemize}
 \item \addPackage{pgffor}
diff --git a/doc/tikz-ext-manual-en-main-preamble.tex b/doc/tikz-ext-manual-en-main-preamble.tex
index 30b21de..91b9565 100644
--- a/doc/tikz-ext-manual-en-main-preamble.tex
+++ b/doc/tikz-ext-manual-en-main-preamble.tex
@@ -41,21 +41,6 @@
 \tracinglostchars=3
 
 \input{pgfmanual-en-macros}
-\newenvironment{pgfkeyslibrary}[1]{% from pgfmanual-en-macros
-  \begin{pgfmanualentry}%
-    \pgfmanualentryheadline{%
-      \pgfmanualpdflabel{#1}{}%
-      \textbf{pgfkeys Library} \texttt{\declare{#1}}}%
-    \index{#1@\protect\texttt{#1} pgfkeys library}%
-    \index{pgfkeys Libraries!#1@\protect\texttt{#1}}%
-    \vskip.25em
-    {{\ttfamily\char`\\usepgfkeyslibrary\char`\{\declare{#1}\char`\}\space\space \char`\%\space\space  \LaTeX\space and plain \TeX}}\\
-    {{\ttfamily\char`\\usepgfkeyslibrary[\declare{#1}]\space \char`\%\space\space Con\TeX t}}\\[.5em]%
-    \pgfmanualbody
-}%
-{%
-  \end{pgfmanualentry}%
-}
 
 \usepackage{unicode-math}
 \setmathfont[Scale=MatchUppercase]{libertinusmath-regular.otf}
@@ -104,8 +89,9 @@
     \@tempswatrue
   \fi}
 \makeatother
-
+\usepgfkeyslibrary{ext.pgfkeys-plus}
 \usetikzlibrary{
+  ext.arrows,
   ext.calendar-plus,
   ext.misc,
   ext.node-families,
@@ -408,6 +394,12 @@
   \index{#1@\originalprefix\protect\texttt{\original{#1}} environment\originalsuffix}%
   \index{Environments!#1@\originalprefix\protect\texttt{\original{#1}}\originalsuffix}%
 }
+
+\newcommand*{\indexArrowtipO}[1]{%
+  \index{#1@\originalprefix\protect\texttt{\original{#1}} arrow tip\originalsuffix}%
+  \index{Arrow tips!#1@\originalprefix\protect\texttt{\original{#1}}\originalsuffix}%
+}
+\newcommand*{\referenceArrowtipandIndexO}[1]{\texttt{#1}\indexArrowtipO{#1}}
 \newcommand*{\referenceEnvironmentandIndexO}[1]{\texttt{#1}\indexEnvironmentO{#1}}
 \newcommand*{\referenceDecorationandIndexO}[1]{\texttt{#1}\indexDecorationO{#1}}
 \newcommand*{\referenceKeyandIndexO}[2][/tikz/]{\texttt{#1#2}\indexKeyO[#1]{#2}}
@@ -500,4 +492,43 @@
 }
 {
   \end{pgfmanualentry}
-}
\ No newline at end of file
+}
+
+\usepackage{booktabs}
+
+\renewenvironment{arrowtip}[4]{
+  \begin{pgfmanualentry}
+    \pgfmanualentryheadline{\textbf{Arrow Tip Kind} {\ttfamily#1}}
+    \index{#1@\protect\texttt{#1} arrow tip}%
+    \index{Arrow tips!#1@\protect\texttt{#1}}%
+    \pgfmanualbody
+    \def\currentarrowtype{#1}
+    \begin{minipage}[t]{\dimexpr\linewidth-5cm\relax}
+      #2
+    \end{minipage}\hskip5mm\begin{minipage}[t]{4.75cm}
+      \leavevmode\vskip-2em
+    \tikz{
+      \draw [black!50,line width=5mm,-{#1[#3,color=black]}] (-4,0) -- (0,0);
+      \foreach \action in {#4}
+      { \expandafter\processaction\action\relax }
+    }
+    \end{minipage}\par\smallskip
+  }
+{
+  \end{pgfmanualentry}
+}
+\makeatletter
+\def\arrowexample@#1[#2]{%
+  {\sfcode`\.1000\scriptsize\texttt{#1[#2]}} \>
+  \tikz [baseline,>={#1[#2]}] \draw [line
+  width=0.4pt,->] (0,.5ex) -- (2em,.5ex); thin \>
+  \tikz [baseline,>={#1[#2]}] \draw [line
+  width=0.8pt,->] (0,.5ex) -- (2em,.5ex); \textbf{thick} \>
+  \tikz [baseline,>={#1[#2]}] \draw [line
+  width=1.6pt,->] (0,.5ex) -- (3em,.5ex); \\
+}
+\def\manual@action@radius#1/#2/#3\relax{%
+  \draw [red,|<->|,semithick] ([xshift=-#1,yshift=#1]current bounding
+  box.north east) -- node [above, overlay] {\texttt{radius}} ++(-#1,0);
+}
+\makeatother
\ No newline at end of file
diff --git a/doc/tikz-ext-manual-en-pgf-arrows.tex b/doc/tikz-ext-manual-en-pgf-arrows.tex
new file mode 100644
index 0000000..d330360
--- /dev/null
+++ b/doc/tikz-ext-manual-en-pgf-arrows.tex
@@ -0,0 +1,268 @@
+% !TeX spellcheck = en_US
+% !TeX root = tikz-ext-manual.tex
+% Copyright 2023 by Qrrbrbirlbel
+%
+% This file may be distributed and/or modified
+%
+% 1. under the LaTeX Project Public License and/or
+% 2. under the GNU Free Documentation License.
+%
+
+\section{Arrow Tips}
+\label{pgflibrary:arrows}
+\tikzset{external/export/.try=false}%
+\begin{pgflibrary}{ext.arrows}
+  This library adds arrows to \pgfname/\tikzname.
+  
+  \inspiration{ArrowLoop-Q,ArrowHug-Q,ArrowUntipped1-Q,ArrowUntipped2-Q}
+              {ArrowLoop-A,ArrowHug-A,ArrowUntipped1-A,ArrowUntipped2-A}
+\end{pgflibrary}
+\begin{multicols}{2}
+The arrow tips of the \referenceLibraryandIndexO{arrows.meta} library always
+just touch the end of original line -- which is usually
+what you want.
+
+But for some arrow tips (and when they lie along a path) it makes sense
+that these tips shoot a bit over the end of the line.
+This is why these arrow tips exist.
+They can be categorized into three groups:
+\begin{enumerate}
+\item Centered
+\item Untipped
+\item Overtipped\footnote{The Overtipped arrow tips aren't yet implemented.}
+\end{enumerate}
+Not all original arrow tips got all variants.
+For a summary, refer to table on the right side.
+As with the original tips of the \referenceLibraryandIndexO{arrows.meta} library
+these can be organized in the following categories.
+\newcolumn
+\begin{center}
+\newcommand*\tip[2][]{%
+  \tikzset{external/export/.try=false}%
+  \tikz[arrows={#2 \arrowtiprow[reversed] - \arrowtiprow[sep] . #2 \arrowtiprow[]}, baseline=+-.5ex,
+    trim left=+-3mm, trim right=+13mm]
+    \draw[line width=+.5mm, postaction={draw, gray, thin,-}] (0,0) -- + (right:1);%
+}%
+\def\tiprow#1 &{#1\gdef\arrowtiprow{#1} &}%
+\def\Tiprow#1 &{\quad#1\gdef\arrowtiprow{#1} &}%
+%\centering
+%\caption{Variants of the original \texttt{arrows.meta} arrow tips.
+%  For each example, the order is 1. reversed variant, 2. original, 3. variant.
+%  They gray line shows where the path actually ends.
+%}\label{tab:tips}
+\begin{tabular}{ll ccc}
+  \toprule
+  Group        & Original                   & Centered       &    Untipped    & Overtipped \\ \midrule
+  Barbed       & \tiprow Arc Barb           & \tip{Centered} & \tip{Untipped} &     --     \\
+               & \Tiprow Parenthesis        & \tip{Centered} & \tip{Untipped} &     --     \\
+               & \tiprow Hooks              & \tip{Centered} &       --       &     --     \\
+               & \tiprow Straight Barb      & \tip{Centered} &       --       &     --     \\
+               & \tiprow Tee Barb           & \tip{Centered} & \tip{Untipped} &     --     \\
+               & \Tiprow Bar                & \tip{Centered} & \tip{Untipped} &     --     \\
+               & \Tiprow Bracket            & \tip{Centered} & \tip{Untipped} &     --     \\ \midrule
+%  Mathematical & Classical TikZ Rightarrow  & --             &       --       &     --     \\
+%               & Computer Modern Rightarrow & --             &       --       &     --     \\
+%               & \quad To                   & --             &       --       &     --     \\
+%               & Implies                    & --             &       --       &     --     \\ \midrule
+  Geometric    & \tiprow Circle             & \tip{Centered} & \tip{Untipped} &     --     \\
+               & \Tiprow Ellipse            & \tip{Centered} & \tip{Untipped} &     --     \\
+               & \tiprow Kite               & \tip{Centered} &       --       &     --     \\
+               & \Tiprow Diamond            & \tip{Centered} &       --       &     --     \\
+               & \Tiprow Turned Square      & \tip{Centered} &       --       &     --     \\
+               & \tiprow LaTeX              & --             &       --       &     --     \\
+               & \tiprow Square             & \tip{Centered} &       --       &     --     \\
+               & \Tiprow Rectangle          & \tip{Centered} &       --       &     --     \\
+               & \tiprow Stealth            & \tip{Centered} &       --       &     --     \\
+               & \Tiprow Triangle           & \tip{Centered} &       --       &     --     \\ \midrule
+%  Caps         &                            & --             &       --       &     --     \\
+  Rays         & \tiprow Rays               & \tip{Centered} &       --       &     --     \\ \bottomrule
+\end{tabular}
+\end{center}
+\newcolumn
+
+\subsection{Centered}
+\subsubsection{Barbed Arrow Tips}
+\begin{arrowtipsimple}{Centered Arc Barb}
+    This is a variant of the \referenceArrowtipandIndexO{Arc Barb} tip.
+    The center of the arc lies on the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Bar}
+    A variant of the simple \referenceArrowtipandIndexO{Bar} tip.
+    This is a simple instance of |Centered Tee Barb| for length zero.
+    
+    The middle of the line will lie on original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Bracket}
+    This is a variant of the \referenceArrowtipandIndexO{Bracket} tip and
+    therefore an instance of the |Centered Tee Barb| arrow tip that results in something
+    resembling a bracket.
+    
+    The middle of the vertical part will lie on the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Hooks}
+    A variant of the \referenceArrowtipandIndexO{Hooks} tip.
+    The starting point of the hooks will lie on the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Parenthesis}
+    This is a variant of the \referenceArrowtipandIndexO{Parenthesis} tip and
+    thus an instance of the |Centered Arc Barb| arrow tip.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Straight Barb}
+    A variant of the \referenceArrowtipandIndexO{Straight Barb} tip.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Tee Barb}
+    A variant of the \referenceArrowtipandIndexO{Tee Barb} tip.
+    
+    The middle of the vertical part will lie on the original end of the path.
+\end{arrowtipsimple}
+
+\subsubsection{Geometric Arrow Tips}
+\begin{arrowtipsimple}{Centered Circle}
+    A variant of the \referenceArrowtipandIndexO{Circle} tip.
+    The center of the circle will lie on the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Diamond}
+    This is a variant of the \referenceArrowtipandIndexO{Diamond} tip and
+    thus an instance of |Centered Kite| where the length is larger than the width.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Ellipse}
+    This is a variant of the \referenceArrowtipandIndexO{Ellipse} tip
+    and thus another name for the |Centered Circle| tip
+    that is twice as wide as high.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Kite}
+    A variant of the \referenceArrowtipandIndexO{Kite} tip.
+    
+    The widest part will lie on the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Rectangle}
+    A variant of the \referenceArrowtipandIndexO{Rectangle} tip.
+    By default, it is twice as long as high.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Square}
+    A variant of the \referenceArrowtipandIndexO{Square} tip.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Stealth}
+    This is a variant of the \referenceArrowtipandIndexO{Stealth} tip.
+    
+    The weighted center will lie at the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Triangle}
+    This is a variant of the \referenceArrowtipandIndexO{Triangle} tip and
+    thus an instance of the |Centered Kite| tip with zero inset.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Centered Turned Square}
+    This is a variant of the \referenceArrowtipandIndexO{Turned Square} tip and
+    thus an instance of the |Centered Kite| tip with identical width and height and mid-inset.
+\end{arrowtipsimple}
+
+\subsubsection{Special Arrow Tips}
+\begin{arrowtipsimple}{Centered Rays}
+    A variant of the \referenceArrowtipandIndexO{Rays} tip.
+    The origin of the rays will lie on the original end of the path.
+\end{arrowtipsimple}
+
+\subsection{Untipped}
+\subsubsection{Barbed Arrow Tips}
+\begin{arrowtipsimple}{Centered Arc Barb}
+    This is a variant of the \referenceArrowtipandIndexO{Arc Barb} tip.
+    The arrow tip will protrude half its line width over the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Untipped Bar}
+    A variant of the simple \referenceArrowtipandIndexO{Bar} tip.
+    This is a simple instance of |Untipped Tee Barb| for length zero.
+    
+    The middle of the line will lie on original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Untipped Bracket}
+    This is a variant of the \referenceArrowtipandIndexO{Bracket} tip and
+    therefore an instance of the |Untipped Tee Barb| arrow tip that results in something
+    resembling a bracket.
+    
+    The arrow tip will protrude half its line width over the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Untipped Parenthesis}
+    This is a variant of the \referenceArrowtipandIndexO{Parenthesis} tip and
+    thus an instance of the |Untipped Arc Barb| arrow tip.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Untipped Tee Barb}
+    A variant of the \referenceArrowtipandIndexO{Tee Barb} tip.
+    
+    The middle of the vertical part will lie on the original end of the path.
+\end{arrowtipsimple}
+
+\subsubsection{Geometric Arrow Tips}
+\begin{arrowtipsimple}{Untipped Circle}
+    A variant of the \referenceArrowtipandIndexO{Circle} tip.
+    This tip will protrude half its line width over the original end of the path.
+\end{arrowtipsimple}
+
+\begin{arrowtipsimple}{Untipped Ellipse}
+    This is a variant of the \referenceArrowtipandIndexO{Ellipse} tip
+    and thus another name for the |Untipped Circle| tip
+    that is twice as wide as high.
+\end{arrowtipsimple}
+
+\subsection{Original Arrow Tips}
+\begin{arrowtipsimple}{Hug Cap}
+This arrow tips will hug a circle that would touch the end of the path.
+
+Use the \referenceKeyandIndexO[/pgf/arrow keys/]{length} key to set up the radius of that circle.
+
+\begin{codeexample}[preamble=\usepgflibrary{ext.arrows}]
+\begin{tikzpicture}[
+  dot/.style 2 args={
+    shape=circle, outer sep=+0pt, fill={#1}, minimum size={#2}}]
+\node[dot={red} {2cm}] (A)           {};
+\node[dot={blue}{3cm}] (B) at (6,0) {};
+\draw[
+  line width=1.5cm,
+  arrows={Hug Cap[length=1cm]-Hug Cap[length=1.5cm]}
+] (A) to[out=45, in=180] (B);
+\end{tikzpicture}
+\end{codeexample}
+\end{arrowtipsimple}
+
+\begin{arrowtip}{Loop}{
+  This arrow tip attaches a one-sided loop to the end of the line.
+  The |length| refers to the length of the whole tip while the |radius|
+  specifies the radius of the three rounded corners.
+  The width of the tip is twice the |length| (but can't specified independently).
+}{length=1.5cm,radius=3.5mm}{length=1.5cm,radius=3.5mm}
+    \begin{arrowexamples}
+        \arrowexample[]
+        \arrowexampledup[sep]
+        \arrowexampledupdot[sep]
+        \arrowexample[open]
+        \arrowexample[open, swap]
+        \arrowexample[length=5pt,radius=0pt]
+        \arrowexample[reversed]
+        \arrowexample[slant=.3]
+        \arrowexample[red]
+    \end{arrowexamples}
+    %
+    The following options have no effect: |harpoon|, |round|, |line width|.
+
+    On |double| lines, the arrow tip will not look correct.
+\end{arrowtip}
+\end{multicols}
+\tikzset{external/export/.try=true}%
+\endinput
diff --git a/doc/tikz-ext-manual-en-pgf-shapes-circlearrow.tex b/doc/tikz-ext-manual-en-pgf-shapes-circlearrow.tex
index e26711b..0d6340a 100644
--- a/doc/tikz-ext-manual-en-pgf-shapes-circlearrow.tex
+++ b/doc/tikz-ext-manual-en-pgf-shapes-circlearrow.tex
@@ -79,11 +79,13 @@ \section{Shape: Circle Arrow}
   circle arrow turn left west, shape example]
   {Circle Arrow\vrule width 1pt height 2cm};
 \foreach \anchor/\placement in
-  {north west/above left, north/above, north east/above right,
+  {north west/above left, north/above,
+   north east/above right,
    west/left, center/above, east/right,
    mid west/right, mid/above, mid east/left,
    base west/left, base/below, base east/right,
-   south west/below left, south/below, south east/below right,
+   south west/below left, south/below,
+   south east/below right,
    text/left, 10/right, 130/above}
    \draw[shift=(s.\anchor)] plot[mark=x] coordinates{(0,0)}
      node[\placement] {\scriptsize\texttt{(s.\anchor)}};
diff --git a/doc/tikz-ext-manual-en-pgf-trans.tex b/doc/tikz-ext-manual-en-pgf-trans.tex
index ccd378a..1250fd8 100644
--- a/doc/tikz-ext-manual-en-pgf-trans.tex
+++ b/doc/tikz-ext-manual-en-pgf-trans.tex
@@ -61,7 +61,7 @@ \subsection{Using built-in transformations}
 
 \begin{codeexample}[preamble=\usepgflibrary{transformations.mirror}]
 \begin{tikzpicture}
-\draw[help lines] (-0.25, -.25) grid (3.25, 1.25);
+\draw[help lines] (-.25, -.25) grid (3.25, 1.25);
 \draw[-latex] (0,0) .. controls (.5,1) .. (1,1);
 
 \draw[dashed] (1.5, -.25) -- (1.5, 1.25);
@@ -79,7 +79,7 @@ \subsection{Using built-in transformations}
 
 \begin{codeexample}[preamble=\usepgflibrary{transformations.mirror}]
 \begin{tikzpicture}
-\draw[help lines] (-0.25, -.25) grid (3.25, 1.25);
+\draw[help lines] (-.25, -.25) grid (3.25, 1.25);
 \draw[-latex] (0,0) .. controls (.5,1) .. (1,1);
 
 \draw[dashed] (1.5, -.25) -- (1.5, 1.25);
diff --git a/doc/tikz-ext-manual.bib b/doc/tikz-ext-manual.bib
index 25c736c..721837b 100644
--- a/doc/tikz-ext-manual.bib
+++ b/doc/tikz-ext-manual.bib
@@ -494,4 +494,107 @@ @Online{UncRectCD2-Q
   year       = {2022},
 }
 
+'
+@Software{GH6,
+  abstract = {{Latest version of ext.misc on CTAN appears to have a typo}},
+  author   = {marmotghost},
+  month    = mar,
+  title    = {Latest version of ext.misc on CTAN appears to have a typo},
+  url      = {https://github.com/Qrrbrbirlbel/tikz-extensions/issues/6},
+  urldate  = {2023-04-01},
+  year     = {2023},
+}
+
+'
+@Online{ArrowLoop-Q,
+  author     = {{IV}, Edgar A. Bering},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/565010/set-the-color-of-a-tikz-cd-glyph-arrow-tip-with-xelatex/681474#681474:text/html},
+  month      = oct,
+  title      = {Set the color of a tikz-cd Glyph arrow tip with xelatex},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/q/565010/16595},
+  urldate    = {2023-04-01},
+  year       = {2020},
+}
+
+@Online{ArrowLoop-A,
+  author     = {Qrrbrbirlbel},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/565010/set-the-color-of-a-tikz-cd-glyph-arrow-tip-with-xelatex/681474#681474:text/html},
+  month      = apr,
+  title      = {Answer to \enquote{Set the color of a tikz-cd Glyph arrow tip with xelatex}},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/a/681474/16595},
+  urldate    = {2023-04-01},
+  year       = {2023},
+}
+
+'
+@Online{ArrowHug-Q,
+  author     = {{DC}, Alejandro},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/241074/better-fitting-line-to-node-in-tikz/241303#241303:text/html},
+  month      = apr,
+  title      = {Better fitting line to node in {TiKZ}},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/q/241074/16595},
+  urldate    = {2023-04-01},
+  year       = {2015},
+}
+
+@Online{ArrowHug-A,
+  author     = {Qrrbrbirlbel},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/241074/better-fitting-line-to-node-in-tikz/241303#241303:text/html},
+  month      = apr,
+  title      = {Answer to \enquote{Better fitting line to node in {TiKZ}}},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/a/241303/16595},
+  urldate    = {2023-04-01},
+  year       = {2015},
+}
+
+'
+@Online{ArrowUntipped1-Q,
+  author     = {Christian},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/111051/tikz-arrow-tip-is-displaced?noredirect=1&lq=1:text/html},
+  month      = apr,
+  title      = {{TikZ} arrow tip is displaced},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/q/111051/16595},
+  urldate    = {2023-04-02},
+  year       = {2013},
+}
+
+@Online{ArrowUntipped1-A,
+  author     = {Qrrbrbirlbel},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/111051/tikz-arrow-tip-is-displaced?noredirect=1&lq=1:text/html},
+  month      = apr,
+  title      = {Answer to \enquote{{TikZ} arrow tip is displaced}},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/a/111053/16595},
+  urldate    = {2023-04-02},
+  year       = {2013},
+}
+
+'
+@Online{ArrowUntipped2-Q,
+  author     = {Hlavacek, Jan},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/11871/modifying-and-o-style-tikz-arrows-so-that-they-are-centered-at-the-end-of?noredirect=1&lq=1:text/html},
+  month      = feb,
+  title      = {Modifying \texttt{*} and \texttt{o} style tikz arrows so that they are centered at the end of line},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/q/11871/16595},
+  urldate    = {2023-04-02},
+  year       = {2011},
+}
+
+@Online{ArrowUntipped2-A,
+  author     = {Qrrbrbirlbel},
+  file       = {Snapshot:https\://tex.stackexchange.com/questions/11871/modifying-and-o-style-tikz-arrows-so-that-they-are-centered-at-the-end-of?noredirect=1&lq=1:text/html},
+  month      = sep,
+  title      = {Answer to \enquote{Modifying \texttt{*} and \texttt{o} style tikz arrows so that they are centered at the end of line}},
+  titleaddon = {{TeX} - {LaTeX} Stack Exchange},
+  url        = {https://tex.stackexchange.com/a/656241/16595},
+  urldate    = {2023-04-02},
+  year       = {2022},
+}
+
 @Comment{jabref-meta: databaseType:bibtex;}
diff --git a/doc/tikz-ext-manual.pdf b/doc/tikz-ext-manual.pdf
index c04e209..57ac4fa 100644
Binary files a/doc/tikz-ext-manual.pdf and b/doc/tikz-ext-manual.pdf differ
diff --git a/tex/generic/tikz-ext/pgfkeyslibraryext.pgfkeys-plus.code.tex b/tex/generic/tikz-ext/pgfkeyslibraryext.pgfkeys-plus.code.tex
index 50cbe7a..b78bc60 100644
--- a/tex/generic/tikz-ext/pgfkeyslibraryext.pgfkeys-plus.code.tex
+++ b/tex/generic/tikz-ext/pgfkeyslibraryext.pgfkeys-plus.code.tex
@@ -103,7 +103,7 @@
       {\the\numexpr\pgfkeysvalueof{\pgfkeyscurrentpath}+1\relax},
   .value/.code=% copies the value of one key to another w/o expanding it
     \pgfkeysgetvalue{#1}\pgfkeys@temp
-    \expandafter\pgfkeys@exp@call\expandafter{\pgfkeys@temp}}
+    \expandafter\pgfkeys@exp@call\expandafter{\pgfkeys@temp}%
 }
 
 \pgfqkeys{/utils}{
diff --git a/tex/generic/tikz-ext/pgflibraryext.arrows.code.tex b/tex/generic/tikz-ext/pgflibraryext.arrows.code.tex
new file mode 100644
index 0000000..f1181e9
--- /dev/null
+++ b/tex/generic/tikz-ext/pgflibraryext.arrows.code.tex
@@ -0,0 +1,288 @@
+% Copyright 2023 by Qrrbrbirlbel
+%
+% This file may be distributed and/or modified
+%
+% 1. under the LaTeX Project Public License and/or
+% 2. under the GNU Free Documentation License.
+%
+
+\usepgflibrary{arrows.meta}
+
+\pgfqkeys{/pgf/@arrows decl}{
+  clone/.code={%
+    \pgfutil@namelet{pgf@decl@arrow@code}{pgf@ar@code@#1}%
+    \pgfutil@namelet{pgf@decl@arrow@defaults}{pgf@ar@defaults@#1}%
+    \pgfutil@namelet{pgf@decl@arrow@setup}{pgf@ar@setup@#1}%
+    \pgfutil@namelet{pgf@decl@arrow@bending@mode}{pgf@ar@bending@mode@#1}%
+    \pgfutil@namelet{pgf@decl@arrow@par}{pgf@ar@par@#1}%
+    \pgfutil@namelet{pgf@decl@arrow@cache}{pgf@ar@do@cache@#1}%
+  },
+  append setup code/.code=
+    \begingroup
+      \pgfutil@toks@\expandafter{\pgf@decl@arrow@setup#1}%
+    \expandafter\endgroup
+    \expandafter\def\expandafter\pgf@decl@arrow@setup\expandafter
+      {\the\pgfutil@toks@ },
+  % append parameters/.code=
+  %   \begingroup
+  %     \show\pgf@decl@arrow@par
+  %     \pgfutil@toks@\expandafter{\pgf@decl@arrow@par#1}%
+  %   \expandafter\endgroup
+  %   \expandafter\def\expandafter\pgf@decl@arrow@par\expandafter
+  %     {\the\pgfutil@toks@ }
+}
+% \pgfkeyssetvalue{/pgf/arrow keys/weight}{true}
+
+%%% Barbed
+%   Arc Barb, Parenthesis
+\pgfdeclarearrow{
+  clone =          Arc Barb,
+  name  = Centered Arc Barb,
+  append setup code = 
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{0pt}
+    \else
+      \pgfarrowssettipend{0pt}
+    \fi
+}
+\pgfdeclarearrow{
+  clone =          Arc Barb,
+  name  = Untipped Arc Barb,
+  append setup code = 
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{\pgfarrowlength}
+    \else
+      \pgfarrowssettipend{\pgfarrowlength}
+    \fi
+}
+
+%   Hooks
+\pgfdeclarearrow{
+  clone =          Hooks,
+  name  = Centered Hooks,
+  append setup code = 
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{0pt}
+    \else
+      \pgfarrowssettipend{0pt}
+    \fi
+}
+
+%   Straight Barb
+\pgfdeclarearrow{
+  clone = Straight Barb,
+  name  = Centered Straight Barb,
+  append setup code = 
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{.5\pgfarrowlength}
+    \else
+      \pgfarrowssettipend{.5\pgfarrowlength}
+    \fi
+}
+
+%   Tee Barb, Bar, Bracket
+\pgfdeclarearrow{
+  clone =          Tee Barb,
+  name  = Centered Tee Barb,
+  append setup code = 
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{0pt}
+    \else
+      \pgfarrowssettipend{0pt}
+    \fi
+}
+\pgfdeclarearrow{
+  clone =          Tee Barb,
+  name  = Untipped Tee Barb,
+  append setup code = 
+    \ifpgfarrowreversed\expandafter\pgfarrowssetbackend\else\expandafter\pgfarrowssettipend\fi
+    {\pgfutil@tempdima
+      \ifpgfutil@tempswa % does it not extend to the right?
+        \advance\pgf@x-.5\pgfarrowlinewidth
+      \else
+        \ifpgfutil@tempswb
+        \else
+          \pgf@x=.5\pgfarrowlength
+        \fi
+        \ifpgfarrowroundcap\else
+          \advance\pgf@x-.5\pgfarrowlinewidth
+        \fi
+      \fi
+    }
+}
+%%% Mathematical
+%   Classical TikZ Rightarrow
+%   Computer Modern Rightarrow, To
+%   Implies
+
+%%% Geometric
+%   Circle, Ellipse
+\pgfdeclarearrow{
+  clone =          Circle,
+  name  = Centered Circle,
+  append setup code =
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{.5\pgfarrowlength}
+    \else
+      \pgfarrowssettipend{.5\pgfarrowlength}
+    \fi
+}
+\pgfdeclarearrow{
+  clone =          Circle,
+  name  = Untipped Circle,
+  append setup code =
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{\pgfarrowlength \advance\pgf@x -.5\pgfarrowlinewidth}
+    \else
+      \pgfarrowssettipend{\pgfarrowlength \advance\pgf@x -.5\pgfarrowlinewidth}
+    \fi
+}
+
+%   Kite, Diamond, Turned Square
+\pgfdeclarearrow{
+  clone =          Kite,
+  name  = Centered Kite,
+  append setup code =
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{\pgfarrowinset}
+    \else
+      \pgfarrowssettipend{\pgfarrowinset}
+    \fi
+}
+
+%   LaTeX
+%   Square, Rectangle
+\pgfdeclarearrow{
+  clone =          Square,
+  name  = Centered Square,
+  append setup code =
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{.5\pgfarrowlength}
+    \else
+      \pgfarrowssettipend{.5\pgfarrowlength}
+    \fi
+}
+
+%   Stealth, Triangle
+\pgfdeclarearrow{
+  clone =          Stealth,
+  name  = Centered Stealth,
+  append setup code =
+    % \pgfkeysgetvalue{/pgf/arrow keys/weight}\pgf@temp
+    % \ifx\pgf@temp\pgf@truetext
+      \ifpgfarrowreversed
+        \pgfarrowssetbackend{.25\pgfarrowlength \advance\pgf@x .25\pgfarrowinset}
+      \else
+        \pgfarrowssettipend{.25\pgfarrowlength \advance\pgf@x .25\pgfarrowinset}
+      \fi
+    % \else
+    %   \ifpgfarrowreversed
+    %     \pgfarrowssetbackend{\pgf@temp\pgfarrowlength}
+    %   \else
+    %     \pgfarrowssettipend{\pgf@temp\pgfarrowlength}
+    %   \fi
+    % \fi
+    ,
+  % append parameters = {,\pgfkeysvalueof{/pgf/arrow keys/weight}},
+  % parameters = {
+  %   \the\pgfarrowlinewidth,%
+  %   \the\pgfarrowlength,%
+  %   \the\pgfarrowwidth,%
+  %   \the\pgfarrowinset,%
+  %   \pgfkeysvalueof{/pgf/arrow keys/weight},%
+  %   \ifpgfarrowharpoon h\fi%
+  %   \ifpgfarrowopen o\fi%
+  %   \ifpgfarrowroundjoin j\fi%
+  % },
+}
+%%% Caps
+
+%%% Rays
+\pgfdeclarearrow{
+  clone = Rays,
+  name  = Centered Rays,
+  append setup code =
+    \ifpgfarrowreversed
+      \pgfarrowssetbackend{0pt}
+    \else
+      \pgfarrowssettipend{0pt}%\pgfarrowssetvisualtipend{\pgf@xa}
+    \fi
+}
+
+%%% Variants
+\pgfkeys{
+  Centered Ellipse /.tip       = {Centered Circle[length=+3.3pt +4.95, width'=+0pt +0.5]},
+  Centered Parenthesis /.tip   = {Centered Arc Barb[arc=+120,length=+1.725pt +2.3]},
+  Centered Bar /.tip           = {Centered Tee Barb[length=+0pt]},
+  Centered Bracket /.tip       = {Centered Tee Barb[inset'=+0pt +1,length=+0.75pt +1]},
+  Centered Diamond /.tip       = {Centered Kite[inset'=+0pt .5]},
+  Centered Turned Square /.tip = {Centered Kite[length=+3pt 4,width'= +0pt 1,inset'= +0pt 0.5]},
+  Centered Rectangle /.tip     = {Centered Square[length=+3pt +4.5,width'=+0pt +.5]},
+  Centered Triangle /.tip      = {Centered Stealth[inset=+0pt, angle=+60:+2.7pt +3.6]},
+  Untipped Ellipse /.tip       = {Untipped Circle[length=+3.3pt +4.95, width'=+0pt +0.5]},
+  Untipped Parenthesis /.tip   = {Untipped Arc Barb[arc=+120,length=+1.725pt +2.3]},
+  Untipped Bar /.tip           = {Untipped Tee Barb[length=+0pt]},
+  Untipped Bracket /.tip       = {Untipped Tee Barb[inset'=+0pt +1,length=+0.75pt +1]},
+}
+
+%%% New Arrows
+\pgfdeclarearrow{
+  name = Hug Cap,
+  parameters = \the\pgfarrowlength,
+  defaults = {
+   length = +0pt +1
+  },
+  setup code={
+    % h = r - .5 sqrt(4 r^2 - s^2)
+    \ifdim2\pgfarrowlength<\pgflinewidth
+      \pgfarrowlength=.51\pgflinewidth
+    \fi
+    \pgfmathsetlengthmacro\pgfarrowh{\pgfarrowlength-.5*sqrt(4*\pgfarrowlength*\pgfarrowlength-\pgflinewidth*\pgflinewidth}
+    % a = asin(s / (2 r))
+    \pgfmathsetmacro\pgfarrowangle{asin(\the\pgflinewidth/(2*\the\pgfarrowlength))}
+    \pgfarrowssavethe\pgfarrowlength % radius
+    \pgfarrowssave\pgfarrowh         % h
+    \pgfarrowssave\pgfarrowangle     % a
+    \pgfarrowsupperhullpoint{0pt}{.5\pgflinewidth}
+    \pgfarrowsupperhullpoint{\pgfarrowh}{.5\pgflinewidth}
+  },
+  drawing code={
+    \pgfpathmoveto{\pgfqpoint{\pgfarrowh}{-.5\pgflinewidth}}
+    \pgfpatharc{180+\pgfarrowangle}{180-\pgfarrowangle}{\pgfarrowlength}
+    \pgfpathlineto{\pgfqpoint{-.1pt}{.5\pgflinewidth}}
+    \pgfpathlineto{\pgfqpoint{-.1pt}{-.5\pgflinewidth}}
+    \pgfpathclose
+    \pgfusepathqfill
+  }
+}
+
+\pgfqkeys{/pgf/arrow keys}{radius/.style={/pgf/arrow keys/inset={#1}}}
+\pgfdeclarearrow{
+  name = Loop,
+  parameters = {\the\pgfarrowlength,\the\pgfarrowinset,\ifpgfarrowopen o\fi},
+  defaults = {length = +3pt +1 +0, inset = +.75pt +1 +0},
+  setup code =
+    \ifdim\pgfarrowlength<\dimexpr2\pgfarrowinset+\pgflinewidth\relax
+      \pgfarrowlength\dimexpr2\pgfarrowinset+\pgflinewidth\relax
+    \fi
+    \pgfarrowssettipend{\pgfarrowlength}%
+    \pgfarrowssetlineend{.5\pgflinewidth}%
+    \pgfarrowssavethe\pgfarrowlength
+    \pgfarrowssavethe\pgfarrowinset,
+  drawing code={%
+    \pgfsetroundcap
+    \pgfpathmoveto{\pgfqpoint{.5\pgflinewidth}{0pt}}%
+    \pgfpathlineto{\pgfqpoint{\dimexpr\pgfarrowlength-.5\pgflinewidth-\pgfarrowinset}
+                             {0pt}}%
+    \pgfpatharc{+-90}{+0}{+\pgfarrowinset}%
+    \pgfpathlineto{\pgfqpoint{\dimexpr\pgfarrowlength-.5\pgflinewidth}
+                             {\dimexpr\pgfarrowlength-.5\pgflinewidth-\pgfarrowinset}}%
+    \pgfpatharc{+0}{+90}{+\pgfarrowinset}%
+    \pgfpathlineto{\pgfqpoint{\dimexpr\pgfarrowinset+.5\pgflinewidth}
+                             {\dimexpr\pgfarrowlength-.5\pgflinewidth}}%
+    \pgfpatharc{+90}{+180}{+\pgfarrowinset}%
+    \pgfpathlineto{\pgfqpoint{\dimexpr\pgfarrowinset+.5\pgflinewidth-\pgfarrowinset}
+                             {\dimexpr-\pgfarrowlength+.5\pgflinewidth}}%
+    \ifpgfarrowopen\pgfusepathqstroke\else\pgfusepathqfillstroke\fi
+  }
+}
\ No newline at end of file
diff --git a/tex/generic/tikz-ext/pgflibraryext.pgfkeys-plus.code.tex b/tex/generic/tikz-ext/pgflibraryext.pgfkeys-plus.code.tex
deleted file mode 100644
index 6101ca8..0000000
--- a/tex/generic/tikz-ext/pgflibraryext.pgfkeys-plus.code.tex
+++ /dev/null
@@ -1,11 +0,0 @@
-% Copyright 2022 by Qrrbrbirlbel
-%
-% This file may be distributed and/or modified
-%
-% 1. under the LaTeX Project Public License and/or
-% 2. under the GNU Free Documentation License.
-%
-
-\input pgfkeyslibraryext.pgfkeys-plus.code.tex
-
-\endinput
\ No newline at end of file
diff --git a/tex/generic/tikz-ext/tikzlibraryext.misc.code.tex b/tex/generic/tikz-ext/tikzlibraryext.misc.code.tex
index 0f06079..5b02075 100644
--- a/tex/generic/tikz-ext/tikzlibraryext.misc.code.tex
+++ b/tex/generic/tikz-ext/tikzlibraryext.misc.code.tex
@@ -5,7 +5,7 @@
 % 1. under the LaTeX Project Public License and/or
 % 2. under the GNU Free Documentation License.
 %
-\usepgflibrary{ext.pgfkeys-plus}%
+\usepgfkeyslibrary{ext.pgfkeys-plus}%
 
 %% full arc
 %% https://tex.stackexchange.com/a/144297/16595