Plugins Pulldown Menu
plug_in_pulldown
The Pllugins pull down is used to launch utilities that have been written as plug ins to Qckvu3.  Items in this menu will appear if one or more plug-ins are found in the plug-in directory.
Extract GDSII - this plug in can be used to define a small window in your open GDSII or OASIS file and then extract it to GDSII.