MCP is MUd Control Protocol. Newly added to Savitar 1.3.
You can find info on it in Savitar's manual, here:
http://www.heynow.com/Savitar/manual130/_m...ntent4.html#MCPIf a world supports MCP, it will report it at connection time. Turn on Savitar's MCP debugging (in the MCP tab of your world settings) and if you see something like this reported "#$#mcp version: 2.1 to: 2.1" to you by the world, then you know the world is MCP aware.
/jay