Anonymous

<program>
  <assign><id>x</id><expr><int>6</int></expr></assign>
  <for>
    <id>i</id>
    <low>1</low>
    <hi>10</hi>
    <slist>
      <call>
        <id>print</id>
        <expr><add><id>x</id><id>i</id></add></expr>
      </call>
    </slist>
  </for>
</program>

<program
  <assign <id x><expr <int 6>>>
  <for
    <id i>
    <low 1>
    <hi 1>
    <slist 
      <call
        <id print>
        <expr <add <id x><id i>>>
      >
    >
  >
>