Later, there was a gradual move such that Solaris Containers specifically referred to non-global zones, with or without additional Resource Management. Zones hosted by a global zone are known as "non-global zones" but are sometimes just called "zones". The term "local zone" is specifically discouraged, since in this usage "local" is not an antonym of "global". The global zone has visibility of all resource on the system, whether these are associated with the global zone or a non-global zone. Unless otherwise noted, "zone" will refer to non-global zones in this article.