No "echo" in the php, just a function call, but otherwise yes.
(This is where the code decides whether there's a featured image in the post, or if the template will have to supply its own random image.)
I've modified the template enough that I can't update automatically until I know what files are gonna be touched. Is there a place I can just see the changes, so I can apply them myself? I'm at template version 1.6.3.
I've added a widget position to functions.php; and modified the visible on-screen text that the template had hard-coded in just about every other part (header, sidebar, home, category, tag, archive, single, search); and of course tweaked the css file. (I imagine it might be faster to copy in the missing function than to reapply all my changes.)