shlib

Specifies either the full path to the shared library or DLL, or a file name relative to the server configuration directory. 

funcs

Comma-separated list of the names of the functions in the shared library or DLL to be made available for use by other Init directives or by Service directives in obj.conf. The list should not contain any spaces. The dash (-) character may be used in place of the underscore (_) character in function names.

NativeThread

(Optional) Specifies which threading model to use. 

no causes the routines in the library to use user-level threading.

yes enables kernel-level threading. The default is yes.

pool

Name of a custom thread pool, as specified in thread-pool-init.