Options for the ath library.
Use a dark color scheme.
Generate a whole HTML document instead of just the <pre>...</pre> tag.
By default ath keeps the input stream in a buffer, allowing for cursor sequences to be used. Use this option to disable that behaviour and directly pass the input stream through. May improve performance and memory consumption. Only really makes sense if you use the piped version of the ansi_to_html function.
Leave the <pre> tags out of the output.