Mount

Provide virtual view for other server(s) by URL mapping, filtering and aliasing resource names, to merge multiple servers, to translate between different protocols, to export internal servers, and so on. Also MOUNT can be used to customize or replace built-in icons and messages.

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*	MOUNT	"vURL rURL opt"	map virtual URL to/from real URL
*	URICONV	convList:attrList	control URI rewriting with MOUNT
	BASEURL	URL	the base of (virtual) URL of this server
	DELEGATE	host:port	limited form of BASEURL