%\ProvidesPackage{init} \usetikzlibrary{quotes,arrows.meta} \usetikzlibrary{positioning} \def\edgecolor{rgb:blue,4;red,1;green,4;black,3} \newcommand{\midarrow}{\tikz \draw[-Stealth,line width =0.8mm,draw=\edgecolor] (-0.3,0) -- ++(0.3,0);} \usepackage{Ball} \usepackage{Box} \usepackage{RightBandedBox}