The first line of its description.
Absolute executable path.
Source classification: tool, dispatcher, or other.
Program, command, option, or argument name as declared in its containing type.
Effective schema returned by the executable and inherited command options.
OptionalsubcommandFor a command of a program (spec section 1.7), its words, given to the
program before the options: db migrate. schema is then the command's,
with the options it inherits.
Words from the root to this command, e.g. ['media', 'to-pcm'].
A probed executable or leaf command, with its effective inherited schema.