It's for building source documentation with doxygen.
Here is the current source documentation for the latest build.
As an example, in the
documenation for player.h, compare the descriptions of struct quest and struct player_race.
The comment headers above functions that look like this:
Code:
/**
* Chooses a room template of a particular kind at random.
* \param typ template room type - currently unused
* \return a pointer to the room template
*/
are another example of doxygen instructions; this one gives
this doxygen output.
Note that this is far from completely done throughout the codebase.