The term used to describe adjustment of a keyboard tray that can be moved up and down in increments of adjustment. An articulating keyboard tray can be adjusted to comfort of the user
Ergostoreonline (A Division of Ergonomic Resources), Ergonomics Dictionary and Glossary North Carolina, USA 2014. http://www.ergostoreonline.com/ergonomics-dictiona ry.aspx, (Ergo - Amer) {744}