[PROJ] Supported geographical coordinate formats

[Andreas B]

Hi,

Is there any formal description or definition of what kind of
geographical coordinate format the proj command line tools support
(input and output)?

Several styles are presented in the docs, e.g.
(https://proj.org/apps/cs2cs.html#using-proj-strings)

45d15'33.1" 111.5W
45d15.551666667N -111d30
+45.25919444444 111d30'000w

Any preferred format?

Thanks,
Andreas