Root System Description Pointer 根系统描述指针
If there is no root or a pointer pointing to any part of the list then your data is lost in memory.
如果既没有根也没有指针指向链表，那么你的数据就丢失在内存中了。
When linking to your CSS and.js files, you must also include a short script block to set up the correct root-directory pointer for GreyBox.
当链接到您的CSS和. js文件时，您必须包含一小段脚本，用来为GreyBox设置正确的根目录指针。
A pointer to a string that contains the root directory of the volume to be described.
指向包含要描述的卷的根目录的字符串的指针。
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