What type of parameters do I need to change in the draw function if I want to get an arrow-like below (see Picture) between my nodes?
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1pgf-manual, arrow shapes, arrow tip– MS-SPOJun 16 at 18:02
1 Answer
\documentclass[border=3.141592]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,
positioning}
\begin{document}
\begin{tikzpicture}[
every node/.style = {draw, minimum size=2em},
alr/.style = {{Implies[]}-{Implies[]}}
]
\node (A) {$S$};
\node [right=of A] (B) {$A$};
%
\draw[double, alr] (A) -- (B);
\end{tikzpicture}
\end{document}
For explanation see TikZ & PGF manual, Arrow Tip Kind Implies, on page 216.