MODE-FE (MODE Front-End) is part of the MODE (Managed Object Development Environment) prototype which is developed for integrating the use of Formal Description Techniques in an environment for building Management applications. MODE-FE provides a GRM (General Relationship Model) and GDMO (Guidelines for the Definition of Managed Objects) parser. The package offers specification checking and an Application Programming interface for manipulating loaded GDMO and GRM specifications. This document is the reference manual for release 1.0 of the MODE-FE (MODE Front-End) tool and its API.