Standardized Terms in Seating and Mobility Are we all speaking the same language in seating and mobility? Have you heard a wheelchair cushion being called a "pillow" by someone who does not work in this field? Do you call a "wheel lock" a "brake" on a wheelchair or an arm support an "armrest"? Is a pelvic positioning belt the same as a pelvic belt for transportation of occupied wheelchairs? (The answer to this last question is no!) The language of seating and mobility is evolving and, in fact, becoming standardized. Let's take a look at why standardization in terms is important and review a sampling of common terms. 9/30/2019 Keep Reading