ASCII
transfer means sending ASCII information rather than program files, images, and
other nontextual information. In contrast, binary transfer means sending
program files, images, and other nontextual information.
Ziff Davis Media. ASCII Transfer Definition. [Online, April 9, 2006.]
http://www.pcmag.com/encyclopedia_term/0,2542,t=ASCII+transfer&i=38023,00.asp.