How to indent documentation in appledoc/HeaderDoc (for documentation on blocks that take arguements)

I created a method that has a block as a parameter. The block takes some arguments, so I would like to indent the documentation like Apple does in their methods that have a similar format...

An simple example how this would look in code is:

/** Loads a project from web service.
 @param securityKey The security key.
 @param block The block to execute after the web service returned all data. The block takes five arguments:
     @param data The data.
     @param fields Some fields.
*/
- (void)loadProjectWithSecurityKey:(NSString *)securityKey andCompletion:(void(^)(NSDictionary *data, NSDictionary *fields))completion;

But clearly this will only appear like this in the documentation:

How do I get data and fields to appear indented like Apple's method that takes a block with arguments?

I couldn't find how to do this in Apple's documentation on HeaderDoc

You can use:

@param block My block with the following parameters: 
<table>
<tr>
  <td><tt>myParam</tt></td>
  <td>Description</td>
</tr>
</table>