5 The CMRL Terminating Nodes

An engine returns a CMRL "terminating node," of which the <message> tag is the simplest example. But there are four other CMRL terminating nodes in version 1.0 of CMRL: the <engine>, <rss>, <query>, and <block> tags. Let's consider the five CMRL terminating nodes in turn and then examine how CMRL terminating nodes are evaluated.



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