default values in documntation strings?

[Werner LEMBERG]

Folks,


consider the following

```
partCombine =
#(define-music-function (chord-range part1 part2)
   ((number-pair? '(0 . 8)) ly:music? ly:music?)
   (_i "... The default value of @var{chord-range} is @code{(0. 8)}.
...")
   ...
```

Is there a standardized way to mention the default value of
`chord-range` in the documentation string, where this default value is
directly derived from the signature?  With 'standardized' I mean a
future-proof solution that will work with (yet to be done)
translations.


    Werner