/**< comments in header files */
 

A number of header files comment struct fields with /**< comments.

What does this denote? I could guess but I won't as I can think of several possibilities.

There's nothing about it in the coding guidelines I found by searching, and searching on angband **< didn't turn up anything.

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:are another example of doxygen instructions; this one gives this doxygen output.

Note that this is far from completely done throughout the codebase.

Thanks, something like that was one of my guesses.