Custom color for the foreground of the text character at the terminal’s highlight position, as a color specification (can be HTML-style hex digits, or a color name such as “red”). This is ignored if highlight-colors-set is false.
Number of scrollback lines to keep around. You can scroll back in the terminal by this number of lines; lines that don’t fit in the scrollback are discarded. If scrollback_unlimited is true, this value is ignored.
If true, scrollback lines will never be discarded. The scrollback history is stored on disk temporarily, so this may cause the system to run out of disk space if there is a lot of output to the terminal.
Possible values are “close” to close the terminal, “restart” to restart the command, and “hold” to keep the terminal open with no command running inside.