Every attribute type defines the syntax of the data to be stored as the attribute value.
每个属性类型都以属性值的形式定义被保存的数据的语法。
2
With a bit of extra syntax, you can data type your variables for this.
增加一些语法，即可为此确定您的变量的数据类型。
3
It includes requirements as they relate to the signature syntax, data model, format, cryptographic processing, and external requirements and coordination.