**Acknowledgements**

content are given, and it is specified that they should contain audio description or long description. A learning system (educational platform, learning object repository, etc.) that is able to understand the PNP defined above and whose user is interested in learning the educational resource of the video tutorial, which represents the original resource, should show

The accessibility of a virtual campus should be ensured at two levels: (1) the accessibility of the learning management system (LMS) that supports the campus and (2) the accessibility of the learning materials published on the platform. A virtual campus with an LMS platform that meets the criteria under different guidelines as described in WCAG 2.0 will be accessible, but when new content is published, the accessibility could be lost, and students with disabilities could face barriers to achieve the learning objectives. Thus, it is important to maintain a

The main principles that an accessible virtual campus should provide are as follows: (1) allow users to customize their portal based on their preferences, (2) provide equivalents to every time-based media and visual elements, (3) use different ways to present information in an interface, (4) provide information appropriate compatible with assistive technologies, (5) allow access to all functionalities via keyboard, and (6) provide background information and status

Training for users of virtual campus, publishing learning content is an ongoing process that should primarily include the following components: (1) training teachers and students in

continuous process of training for stakeholders involved in the virtual campus.

the adaptations that are associated with it.

**Figure 9.** User PNP XML (afapnpv3p0\_USR1.xml).

434 E-Learning - Instructional Design, Organizational Strategy and Management

and location information to the user at all times.

**5. Conclusions**

This work is funded by the University of Alcalá (Spain) and Galileo University (Guatemala) (grant ESVIAL project). Authors also want to acknowledge support from the Master in Software Engineering for the Web and the TIFyC research group.
