Into the 21st Century: The Changing Role of Editors 
The historical perception that defined editors as guardians of the language falls short in describing editors in high-technology environments today. Essential skills for the 21st century require technical editors who can demonstrate sophisticated and extensive tool knowledge, product knowledge, and an appreciation for current professional trends—in addition to being guardians of the language.
Swartz, Michelle A., Gail M. Wilson, Dan Bakely and Barbara S. Muench. STC Proceedings (1996). Articles>Editing