Atom With Data

Each atom in XMIR, must not have the text data inside.

Incorrect:

<program>
  <objects>
    <o name="obj">
      A1-B2-C3-D4-E5
      <o name="λ"/>
    </o>
  </objects>
</program>

Correct:

<program>
  <objects>
    <o name="obj">
      <o name="λ"/>
    </o>
  </objects>
</program>