package org.altusmetrum.AltosLib;
+import java.io.File;
+
public interface AltosPreferencesBackend {
public String getString(String key, String def);
public boolean nodeExists(String key);
public AltosPreferencesBackend node(String key);
+ public String[] keys();
+ public void remove(String key);
+
public void flush();
+
+ public File homeDirectory();
}