Documentation of limit_req

About http://nginx.org/en/docs/http/ngx_http_limit_req_module.html

It does not specify anything about inheritance.

It appears (from reading sources) that limit_req are inherited only, if
no new limit_req are specified. This is the same as for proxy_set_header
and others:
http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_set_header

However this is not documented on above page. Could it be added?

Martin