The scope environment allows you to apply local transformations or styles to a set of TikZ commands without affecting the rest of the picture. You can scale, rotate, or shift all elements inside a scope.
The axis environment with the package pgfplots (\usepackage{pgfplots}!!!) is used to create plots and function graphs. You can plot mathematical functions or data easily.
The \node[draw] command creates a node with a border. Nodes can contain text, tables, or even other TikZ commands. Useful for structured or complex content. The following example requires \usetikzlibrary{positioning}.