I found that comments with three slashes before the method declaration are shown when alt+click on a message. ie:
```objective-c
///  Returns a UIColor that matches the given hexa value.
///  Example: [UIColor colorWithHexa:0xRRGGBBAA]
///  RR red value, GG green value, BB blue value, AA alpha value
+ (UIColor *)colorWithHexa:(NSUInteger)hexaValue;
```
![captura de pantalla 2014-04-15 a la s 19 36 32](https://cloud.githubusercontent.com/assets/1740375/2713931/6efbdfd6-c4ee-11e3-9b50-ba4097f03731.png)