1 INTRODUCTION

2 XMM-NEWTON OBSERVATIONS IN THE XMM-LSS REGION AND DATA REDUCTION
2.1 XMM-Newton and Chandra data in the XMM-LSS region
2.2 Data preparation and background-flare filtering

3 THE MAIN X-RAY SOURCE CATALOG

4 MULTIWAVELENGTH COUNTERPART IDENTIFICATION
4.1 The likelihood-ratio matching method
4.2 Counterpart identification reliability
4.3 Supplementary multiwavelength matching results with the NWAY Bayesian catalog matching method

5 REDSHIFTS
5.1 Spectroscopic redshifts
5.2 Photometric redshifts

6 SOURCE PROPERTIES AND CLASSIFICATION

7 SUMMARY