How to find out build configuration of my currently used Ghostscript executable?

[pipitas]

My apologies if there is a more appropriate place to ask beginner
questions like mine. If there is, please tell me. A lot has changed
about "Ghostscript places" around the 'Net, and me essentially having
been offline most of the time for a few years, it looks like a new
planet to me ... (I'm delving more deeply into Ghostscript than I ever
have in my past active internet years, and the more my studying and
learning takes off, the more questions I'll have to ask).

I've started to re-read all of the Ghostscript documentation, starting
off with 'Use.htm'. It's a lot of material to digest, and I'm
appreciating any help I can get to make this happen more quickly (or
sometimes: happen at all).

So here is my first question:

Is there a quick way to find out which were the compiled-in defaults
and features into the Ghostscript executable I'm currently using?

I know that I can use 'gs -h' to find out:

1. supported input formats
2. available devices
3. current search path
4. if or if not the initialization files are compiled in

However, "Language.htm" in the documentation tells me about Display
Postscript: "facilities are available only if the dps feature or the
level2 feature was selected when Ghostscript was built".

The same is true for the composite font extensions: "are available
only if the compfont feature or the level2 feature was selected when
Ghostscript was built".

And more examples are to be found in the same file..

As an example for another open source program, have a look at Samba.
If you run

   smbd -b

you'll get a list of all config options that were applied when the
executable was build.

Is there any similar facility for Ghostscript that I'm not aware of
which lists me all built-in capabilies of my current gs executable?

(I know I could always try and build Ghostscript with exactly the
options I want or need. But _you_ know that in real life this is not
always feasible, and you'll just have to use what is available right
now.)