What kind of salute do inner sea cultures use?

[deuxhero]

If (for example) a Taldor soldier salutes as a knight enters, what is the soldier actually doing physically?

The "Roman Salute" would be appropriate for most vaguely European countries, except that's now associated with a certain real world regime with a lot of implications attached.

[Ventnor]

I'm a fan of the salute described in the Codex Alera, which is banging the right fist against the heart.

[DrSwordopolis]

I doubt there's any canon description.

For myself, I'd probably assign different nationalities different salutes based upon their real-world inspiration.
American style (palm down, index and middle finger touching the brim of the hat) salute for Andoran.

British style (palm out, index and middle finger touching the bring of the hat) for Cheliax-sphere countries.

Maybe a "Roman" fist to heart salute for Taldor? I dunno.