Bug 82231 [build path] Hard to find type restriction compiler problem preferences
I20050104-1600 There compiler preference page contains a Warning/Error node with many sub-entries . I tried to find where I could change the 'warning' for the access of internal types to 'error'. No luck until I realized that the Build node also contains Warning/Error settings.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
if (result != null) {
					URL newURL= result[0];
					selElement.setAttribute(CPListElement.JAVADOC, newURL != null ? newURL.toExternalForm() : null);
					attributeChanged= true;
					fLibrariesList.refresh(elem);
					fClassPathList.dialogFieldChanged(); 
				}
			} catch (MalformedURLException e) {
				
			}
		} else if (key.equals(CPListElement.ACCESSRULES)) {
			AccessRulesDialog dialog= new AccessRulesDialog(getShell(), selElement);
			if (dialog.open() == Window.OK) {
				selElement.setAttribute(CPListElement.ACCESSRULES, dialog.getAccessRules());
				attributeChanged= true;
				
				fLibrariesList.refresh(elem);
				fClassPathList.dialogFieldChanged(); 
			}
		} else if (key.equals(CPListElement.NATIVE_LIB_PATH)) {
			NativeLibrariesDialog dialog= new NativeLibrariesDialog(getShell(), selElement);
			if (dialog.open() == Window.OK) {
				selElement.setAttribute(CPListElement.NATIVE_LIB_PATH, dialog.getNativeLibraryPath());
				attributeChanged= true;
				
				fLibrariesList.refresh(elem);
				fClassPathList.dialogFieldChanged(); 
			}
		}
		if (attributeChanged) {