Minor documentation improvements regarding threads and faces.
Minor documentation improvements regarding threads and faces.

xlgames-inc/XLE,xlgames-inc/XLE,xlgames-inc/XLE,xlgames-inc/XLE,yorung/XLE,yorung/XLE,yorung/XLE,yorung/XLE,yorung/XLE,xlgames-inc/XLE,xlgames-inc/XLE,yorung/XLE,xlgames-inc/XLE,yorung/XLE,yorung/XLE,xlgames-inc/XLE