title: What is the difference between RO-Properties and TO-Properties in QTP?
body: <p>In QTP each test object supports the following methods</p>
  
  <pre><code>GetRoProperty
  GetToProperty
  SetToProperty
  GetToProperties
  </code></pre>
  
  <p>What is the difference between a <strong>RO</strong>-property and a <strong>TO</strong>-property and why can I only set a <strong>TO</strong>-property and not an <strong>RO</strong>-property?</p>