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The following code draws 10 nodes, labelled from 0 to 9. \documentclass[a4paper,10pt,landscape]{article} \usepackage{tikz} \begin{document} \begin{tikzpicture} \foreach \i in {0,...,9}{ \node (i) at (\i, \i) {\i} ; } \end{tikzpicture} \end{document} Instead, I would like the nodes to be labelled from a to j. Is there a function which, given an integer n, returns the n-th letter of the alphabet?
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