Website META Language 介绍
It consists of a control frontend driving up to nine backends in a sequential
pass-oriented filtering scheme. Each backend provides one particular core
language. For maximum power, WML additionally ships with a well-suited set of
include files, which provide higher-level features built on top of the
backends core languages. While not trivial and idiot proof, WML provides most
of the core features real hackers always wanted for HTML generation.