Xcode 5 - comment for documentation

New feature of Xcode 5. You can document your own code as like the below:

/*! Add new message between source to destination timeline as empty name string
 * \param sourceId Source timeline entity ID
 * \param destId Destination timeline entity ID
 * \returns A newly created message instance
 */
- (ISMessage*)messageFromTimeline:(NSInteger)sourceId toTimeline:(NSInteger)destId;

You can use Doxygen format for documentation. Then you can see the documentation of this function from Xcode 5 UI (by using Quick Help or Option-Click). 

Very easy! The following comment styles are also possible.

/** 

 * Add new message between source to destination timeline as empty name string

 * @author Wonil Kim

 *

 * @param sourceId Source timeline entity ID

 * @param destId Destination timeline entity ID

 * @return A newly created message instance

 */

- (ISMessage*)messageFromTimeline:(NSInteger)sourceId toTimeline:(NSInteger)destId;

/// Add new message between source to destination timeline

///

/// @param sourceId Source timeline entity ID

/// @param destId Destination timeline entity ID

/// @param name Message name

/// @return A newly created message instance

- (ISMessage*)messageFromTimeline:(NSInteger)sourceId toTimeline:(NSInteger)destId withName:(NSString*)name;

Property documentation is also possible.

/// Minimum height of entity for layout calculation

@property NSInteger minEntityHeight;

Please check this stackoverflow discussion also:
http://stackoverflow.com/questions/19168423/what-are-the-new-documentation-commands-available-in-xcode-5

And, Apple's documentation:
https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/HeaderDoc/tags/tags.html