<then>

<then> separates the condition from the default in an <if>, or the antecedent and the consequent in a <cond> element. 18.11 Feature System Declaration
組件iso-fs — 18 Feature Structures
屬性
屬於cond if
可包含空白元素
宣告
element then { att.global.attributes, empty }
This element is provided primarily to enhance the human readability of the feature-system declaration.