Bug 134740 [Wizards] PDE product wizard is not obvious to use.
see attached image. The wizard for creating a new product opens with a file name initialized to ".product" which is selected. Generally this would imply that this is a good default but if you start typing you will replace the text with something else that is also a good name. If you require an extension for a file you should add it yourself like the "Export Archive" wizard.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFileCreationPage.java
linkedResourceGroupHeight = groupSize.y;
			}
			shell.setSize(shellSize.x, shellSize.y + linkedResourceGroupHeight);
			composite.layout();
			advancedButton.setText(IDEWorkbenchMessages.hideAdvanced);
		}
	}
	/**
	 * The <code>WizardNewFileCreationPage</code> implementation of this
	 * <code>Listener</code> method handles all events and enablements for
	 * controls on this page. Subclasses may extend.
	 */
	public void handleEvent(Event event) {
		setPageComplete(validatePage());
	}
	/**
	 * Sets the initial contents of the container name entry field, based upon
	 * either a previously-specified initial value or the ability to determine
	 * such a value.
	 */
	protected void initialPopulateContainerNameField() {
		if (initialContainerFullPath != null) {
			resourceGroup.setContainerFullPath(initialContainerFullPath);
		} else {
			Iterator it = currentSelection.iterator();
			if (it.hasNext()) {
				Object object = it.next();
				IResource selectedResource = null;
				if (object instanceof IResource) {
					selectedResource = (IResource) object;