| PlugIn |

    package ij.plugin;

    /** Plugins that acquire images or display windows should
        implement this interface. Plugins that process images
        should implement the PlugInFilter interface. */
    public interface PlugIn {

        /** This method is called when the plugin is loaded.
            'arg', which may be blank, is the argument specified
            for this plugin in IJ_Props.txt. */
        public void run(String arg);

    }

| PlugIn |