The SOAP mustUnderstand attribute is used to indicate whether a header entry is mandatory or optional.
SOAPmustUnderstand属性用于指出一个头条目是必选的还是可选的。
The SOAP actor attribute plays the key role in identifying which part of the SOAP header entry is intended for the receiver.
SOAPactor属性在标识 SOAP 头条目的哪一部分将被传送给接收方时起了关键作用。
If the to element is not present inside the path header entry, then the ultimate destination is designated by the last via element.
如果to元素没出现在path头条目中，则由最后一个via元素指明最终目的地。
1 indicates that the header entry must be processed by the actor indicated in the header and 0 indicates that such processing is optional.
1表示必须由头中所指出的参与者来处理这个头条目，0表示这种处理是可选的。
The attributes of the SOAP header entry -- actor and mustUnderstand -- determine who should process the header and whether the processing should be mandatory or not.
SOAP 头条目的属性 —actor和mustUnderstand —确定了谁应该处理头以及处理是否是必选的。
For example, if you click while pointing to a block header entry, the shortcut menu shows the New Version block Info and Delete Version block Info commands.
例如，如果在指向块头项时单击，快捷菜单将显示“新建版本信息区”和“删除版本信息区”命令。
For example, if you click while pointing to a block header entry, the shortcut menu shows the New Version block Info and Delete Version block Info commands.
例如，如果在指向块头项时单击，快捷菜单将显示“新建版本信息区”和“删除版本信息区”命令。
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