The <cxxfunction> element is a reference to a C++ function.
The <cxxfunction> element can be used to reference a C++ function from another topic type.
<task id="connectionsxml"> <title>Connections</title> <taskbody> <steps> <step><cm>Open the connection</cm> <info>You can use <cxxfunction keyref="connectfunction">connect() function</cxxfunction> in a C++ application.</info> </step> ... </steps> </taskbody> </task>