The [top-answerers-on-tags](http://api.stackexchange.com/docs/top-answerers-on-tags) and [top-askers-on-tags](http://api.stackexchange.com/docs/top-askers-on-tags) documentation claim:

> Returns the **top 30 answerers** active in a single tag, of either all-time or the last 30 days.

and

> Returns the **top 30 askers** active in a single tag, of either all-time or the last 30 days.

Both return 20 results. This is consistent with the per-tag [top users pages](http://stackoverflow.com/tags/python/topusers), which also show just 20 users, for the past 30 days.

This is simple documentation bug; it should simply read **top 20** instead.