This consolidated version of the Ada Reference Manual enhances the International Standard ISO/IEC 8652:1995(E) for the programming language Ada by incorporating the Technical Corrigendum 1 approved by ISO in February 2001. The Technical Corrigendum 1 lists the individual changes that need to be made to the text of ISO/IEC 8652:1995(E) to correct errors, omissions or inconsistencies. The enhanced Ada Reference Manual presents and updates the International Standard for Ada in a user-friendly way and thus will replace the former version as an indispensible working companion for anybody using Ada professionally or learning and studying the language systematically.