pdf.landscapeBoolean(default: false)
If set to true, reverses the paper dimensions in such a way that the width becomes the larger edge.
Example - enabling the landscape mode
<div id="propertyGrid"></div>
<script>
  $("#propertyGrid").kendoPropertyGrid({
    columns: {
        fieldColumn: { width: 200 },
        valueColumn: { width: 250 }
    },
    model: {
        foo: "bar",
        baz: 5
    },
    toolbar: ["pdf"],
    pdf: {
      landscape: true
    }
  });
</script>
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