I'm editing a 50 pages long article in which I'd like to mark texts using tikzmarknode and then draw a path from it into a node like this:
I wrote this this code.
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{tikzmark}
\setlength{\parskip}{6pt plus 2pt minus 1pt}
\usepackage{lipsum}
\begin{document}
\lipsum[1]\tikzmarknode[inner sep=2pt,draw]{surname}{\mbox{Kennedy}}\lipsum[1]
\vspace{25pt}
\lipsum[1]
\begin{tikzpicture}[remember picture, overlay]
\draw[blue,thick,->](surname.south west) -| ([shift={(-1.3,-5.2)}]surname.south west) -- ([shift={(0.5,-5.2)}]surname.south west)
% \draw[blue,thick,->](surname.south west) -| (-1.3,-5.2) -- (1.8,0) % That looks fine but it doesn' give the expected result
% \draw[blue,thick,->](surname.south west) -| (-1.3,-5.2) +- (1.8,0) % That's intuitive but it doesn't even compile
% \draw[blue,thick,->](surname.south west) -| ([shift={(-1.3,-5.2)}]surname.south west) -- (1.8,0) % That still involves repetition and doesn't give the expected output
node [right, draw]{\footnotesize John Fitzgerald Kennedy, the 35th president of the USA from 1961 to 1963};
\end{tikzpicture}
\end{document}
I've managed to draw the path albeit with code repetitions. To eliminate them, I've rewritten the path, 3 of my rewrite attempts are given in the code. None of them worked. One of them gave e.g. this output:
I've taken a look at the TikZ documentatiomn but it's hard to digest this specific information out of it. I've taken a look at this similar question Telling TikZ to continue the previously-drawn path with a line-to operation? but it doesn't fit the particular structure of my problem.
How to write that path code in the most concise manner? Rationale: I'll be using this code tens of times in the article I edit.
Optional / Related Question How to use the plus-sign line-to operation? It might be documented somewhere but because it's a symbol with no name, it's not easy to identify it in the TikZ documentation or search for it on the Internet.
