I have some data in file as

<1>one</1>
data data data data
<2>two</2>
data data data data
<3>three</3>
data data data data
<3>blah</3>
data data data data
<2>blah</2>
data data data data
<4>zoom</4>
data data data data
<4>zoom</4>
data data data data
<1>data</1>

[download]

i need the output as 

<1>one
data data data data
<2>two
data data data data
<3>three
data data data data
</3>
<3>blah
data data data data
</3>
</2>
<2>blah
data data data data
<4>zoom
data data data data
</4>
<4>zoom
data data data data
</4>
</2>
</1>
<1>data
data data data data
</1>

[download]

The closing should be as the in nested order.

In reply to Section Handling - Nested by veera

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