None-linearty

\begin{tikzpicture}[main/.style = {draw, circle}]

{} This text will be centred since it is inside a special environment. Environments provide a efficient way of modifying blocks of text within your document. \end{tikzpicture} \end{center}

\documentclass{article} \begin{document} \begin{tikzpicture}[main/.style = {draw, circle}] \node[main] (1) {}; \end{tikzpicture} \end{document}