title: Meaning of "col" vs "col_choice" in answers?
body: <p><a href="https://developer.surveymonkey.com/mashery/get_responses" rel="nofollow">https://developer.surveymonkey.com/mashery/get_responses</a> says:</p>
  
  <pre><code>data[_].questions[_].answers[_].row (Optional)    Id of a row type answer    String
  data[_].questions[_].answers[_].col (Optional)    Id of a col type answer    String
  data[_].questions[_].answers[_].col_hoice (Optional)    Id of a col_choice answer    String
  </code></pre>
  
  <p>What is an example of a question that would produce a col_choice answer? Is it a menu choice?
  In the old relational database format we had these following defined in ResponseTable.html. 
  What do they correspond to now?</p>
  
  <p>For Qtype 50</p>
  
  <pre><code>Matrix of Drop-Down Menus    
  key1=QuestionOptions.OptionID of row choice    
  key2=QuestionOptions.OptionID of menu choice    
  key3=QuestionOptions.OptionID of menu heading
  </code></pre>
  
  <p>For qtype=30, 40, or 60</p>
  
  <pre><code>key1=QuestionOptions.OptionID of row choice    
  key2=0    
  key3=QuestionOptions.OptionID of column choice
  </code></pre>
  
  <p>There is a mention of "column choice" there but I think that means "col" in the API, not "column_choice"
  Can you confirm?</p>
  
  <p>Thanks</p>