Is there any documentation on exactly what is counted under "Read Rate Limits" vs "Overall Rate Limits" ?

https://www.strava.com/settings/api includes little (?) links next to each, but they both link to the same page which does not mention Read vs Overall.

We're assuming read is pretty much any call to GET athlete/activities or activities/.../stream, but it would be nice to confirm - the overall rate limit we have is five times the read limit, and we have no idea what we would do with so many write calls 🙂

Thanks