update - Merge update

<update>

Merge update

Introduce

The same as the following：
update_start id="..."
update_end

New content is replaced at the same id part in the merged file.

template:
<update id="...">
 ..(2)..
</update>

the same id in merged file:
update_start id="..."
  ..(1)..
update_end

After merge:
update_start id="..."
  ..(2)..
update_end

Attribute

id(required)
Merge update id

Example

More examples, please read: