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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="GUID-DE9CB4F7-5129-5450-A6D6-9B0BA253FC81" xml:lang="en"><title>Plug-in User's Tutorial</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>Plug-in users instantiate and use the implementations. They need to have a comeplete knowledge of using the plug-in framework. The plug-in users also need to a follow an explicit memory cleanup procedure to ensure the handles held on unused plug-in implementations and their associated DLLs are closed.</p> </conbody></concept>