WML
Wireless Markup Language
An industry-standard markup language for creating special, small web sites optimized for phones.
WML was a core feature of the WAP 1.x standard.
WML has generally been phased out in favor of the newer xHTML standard, part of WAP 2.0.
See: WAP
See: XHTML
Most phones support both WAP 1.x (WML and WAP 2.0 (XHTML). Older phones may only support WAP 1.x (WML) sites.