As part of a scheme, specialized DITA mapelements specify the relationships that define a thesaurus or taxonomy hierarchy (see Figure 3).
作为方案的一部分，专门化的dita图元素指定的关系定义了辞典或分类法的层次结构(请参阅图3)。
2
Mapelements are used to convert the data format between different structures, for example, whenever the data formats between consecutive elements are incompatible.
As explained in earlier examples, the key to the script lies in the definition file, defs.xml, which tells XJConf how to mapelements from the configuration file into a PHP array.