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diff --git a/graphics/pgf/base/tex/generic/frontendlayer/tikz/libraries/tikzlibraryshapes.callouts.code.tex b/graphics/pgf/base/tex/generic/frontendlayer/tikz/libraries/tikzlibraryshapes.callouts.code.tex
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+% Copyright 2018 by Mark Wibrow
+%
+% This file may be distributed and/or modified
+%
+% 1. under the LaTeX Project Public License and/or
+% 2. under the GNU Public License.
+%
+% See the file doc/generic/pgf/licenses/LICENSE for more details.
+
+\usepgflibrary{shapes.callouts}%
+
+\pgfkeys{/tikz/callout absolute pointer/.code={%
+ \tikz@scan@one@point\tikz@lib@callout@checkforplus#1\relax%
+ }%
+}%
+
+\def\tikz@lib@callout@checkforplus#1{%
+ \pgfutil@ifnextchar+{\def\tikz@lib@callout@originalpoint{#1}\tikz@lib@callout@scan@relative}%
+ {\pgf@lib@callout@makeabsolutepointer{#1}}}%
+
+\def\tikz@lib@callout@scan@relative+{%
+ \pgfutil@ifnextchar+{\tikz@lib@callout@scan@plusplus}{\tikz@lib@callout@scan@plus}}%
+\def\tikz@lib@callout@scan@plusplus+{\tikz@scan@one@point\tikz@lib@callout@add}%
+\def\tikz@lib@callout@scan@plus{\tikz@scan@one@point\tikz@lib@callout@add}%
+\def\tikz@lib@callout@add#1{%
+ \expandafter\pgf@lib@callout@makeabsolutepointer\expandafter{%
+ \expandafter\pgfpointadd\expandafter{\tikz@lib@callout@originalpoint}{#1}}%
+}%
+
+\pgfkeys{/tikz/callout relative pointer/.code={%
+ \tikz@scan@one@point\pgf@lib@callout@makerelativepointer#1\relax%
+ }%
+}%
+
+\endinput