Hi i am new to XML i dint write any xml for my application, i want to merge two xml tags or giving link to one tag to another together(ie) data of one tag should be copied to another tag. for example 

```
<tag1>data</tag1> <tag2>tag1 data</tag2>.

```

Here i want to share the data of tag1 in tag2. for this i have given

```
<tag1 xml:id='tag1'>some data</tag1>
  <tag2 xlink:href='#tag1' />

```

but the data are not linked together. if any other knows how to link xml tags together pls guide me