Represented as an ordinalnumber followed by either a single .0 or a set of ordinal numbers separated by dots, the node data type corresponds to a position in a tree structure.
节点数据类型用一个序数加一个 .0 或一组以点号隔开的序数来表示，它对应于一个树结构中的一个位置。
2
The input message, shown in Listing 1, provides a data value some_data that is concatenated with an ordinalnumber to produce each output element.
清单1所示的输入消息提供一个数据值some_data，它与一个序号连接起来生成每个输出元素。
3
During the single dot cross operation, import the athuard ordinalnumber arrow, simplify the cross operation of the natural sequence.