circo:tldr:86a9a

The command "circo -?" is used to display the help menu and options for the "circo" software, which is a part of the Graphviz package.

Graphviz is a collection of tools used for visualizing and analyzing structured data. "Circo" is one of the layout engines provided by Graphviz, specifically designed for circular layouts of directed graphs. It is particularly useful for visualizing cyclic structures or hierarchies.

When the command "circo -?" is executed, it will display a list of available command-line options and their descriptions for the "circo" tool. These options can be used to customize the layout, appearance, and behavior of the generated circular graph. The help menu typically explains how to specify input and output files, choose different output formats, adjust graph attributes, and control various rendering options.

By referring to the help menu, users can understand and utilize the capabilities of "circo" more effectively, enabling them to generate visually appealing and informative circular graph visualizations.