Assistive listening devices include FM, infrared, and loop assistive listening devices. Some management options include hearing aids, cochlear implants, assistive technology, and closed captioning. Management involves the use of appropriate assistive devices, called alternative and augmentative communications. Symptoms may be managed with reconstructive surgery, hearing aids, speech therapy, and other assistive devices. Additionally RDFa may benefit web accessibility as more information is available to assistive technology. People with a mobility impairment use trackballs as an assistive technology input device. Adaptive technology and assistive technology are different. Assistive technology devices can be customized to the patient or bought commercially. Sign language and assistive language technology can aid communication. People who view assistive devices as enabling greater independence accept and use them. Some may be ambulant with the use of assistive devices. Using any of these assistive technologies can help down syndrome students during their educational process. Treatments may include medication, physical therapy, exercise, heat therapy, orthotics, and assistive devices, and rest. Consequently, adaptive technology is a subset of assistive technology. There are many benefits of assistive technologies.