The chart training guide from Jeppesen, is published as a service for pilots training with Jeppesen charts. It is intended for reference only and includes some of the most commonly used symbiology. This guide is revised regularly; however some variance may exist between this guide and current chart services. These may be the result of one or more of the following; chart issuance dates, timely application of changes received from governing agencies, and/or the method of representing such information. The chart training guide has been designed as a supplementary training material and is not intended for navigation.