This Guide for Developers is one element in a series of other sources of information and support. Its main purpose is to provide guidance in the creation of useful and acceptable ELPs by · discussing fundamental issues and options developers need to be aware of and have to decide upon before they actually start developing an ELP; · providing background information on the Portfolio and its different sections and elements; · presenting and illustrating the relevant provisions and options stated in the Principles and Guidelines; · bringing together some of the experience and know-how gained by former ELP authors; · presenting, discussing and recommending examples from existing Language Portfolios; · outlining the validation process every ELP has to go through. The present guide has two intended groups of users: · current and potential developers of European Language Portfolios; · (national) authorities which have to establish whether newly developed ELP versions drawn up locally meet the criteria set by the Principles and Guidelines and are in line with the practice adopted by the European Validation Committee.