This paper offers a detailed introduction of the Generalized Multi-List (GML), a data structure defined in the project "the Implementation of Initial Graphics Exchange Specification".
A multi-purpose, often hierarchical, list of terms that describes content
一个多用途的词汇列表，用来描述内容，常常是层次化的。
3
Engine Yard's second cluster filled up fast, and a third is under construction, with new customers currently being placed on a multi-week waiting list.