This extension point provides a mechanism for contributing a user interface/presentation for a string substitution variable (i.e. a context variable or value variable). a fully qualified identifier of the target extension point an optional identifier of the extension instance an optional name of the extension instance specifies the variable this presentation is for specifies a fully qualified name of a Java class that implements <code>IArgumentSelector</code> 2.1 The following is an example of a variable presentation contribution: <pre> <extension point="org.eclipse.debug.ui.stringVariablePresentations"> <variablePresentation variableName="example_variable" argumentSelector="com.example.ExampleArgumentChooser"> </variablePresentation> </extension> </pre> In the above example, the contributed presentation will be used for the variable named "example_variable". An argument selector is specified to configure an argument applicable to the variable. Copyright (c) 2003, 2013 IBM Corporation and others.<br> All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a> Value of the attribute <b>argumentSelector</b> must be a fully qualified name of a Java class that implements the interface <b>org.eclipse.debug.ui.stringsubstitution.IArgumentSelector</b>.