OK, I agree:
Let's say, I change this line to:
`function printRSSLink($option, $prev, $linktext, $next, $printIcon=false, $class=null) {`
...still, I would do this by editing directly the file 'template-functions.php'. Next time I make an upgrade, the file will be over-written by a newer version, right? (or maybe I'm wrong or missing something?)
I think, in WordPress, each theme can have its own custom functions, or override core WP functions, if a function is specified in the 'functions' file in the theme directory. Maybe Zen Gallery has a similar approach? Or different one?
I'm not very good in programming, and still trying to understand the way Zen works, please forgive me if I asked a stupid question...