A PERsistent C++ variant Version 2.3.3 compiler . GNU E is a PERsistent, object oriented programming language developed as part of the Exodus project. GNU E extends C++ with the notion of PERsistent data, program level data objects that can be transparently used across multiple executions of a program, or multiple programs, without explicit input and output oPERations. GNU E' s form of PERsistence is based on extensions to the C++ type system to distinguish potentially PERsistent data objects from objects that are always memory resident. An object is made PERsistent either by its declaration (via a new "PERsistent" storage class qualifier) or by its method of allocation (via PERsistent dynamic allocation using a special overloading of the new oPERator). The underlying object storage system is the Exodus storage manager, which provides concurrency control and recovery in addition to storage for PERsistent data. restriction: Copyleft not all run-time sources are available (yet) requires: release 2.1.1 of the Exodus storage manager E-mail: . (1993-01-20)