>In Oz, we typically refer to "mains power" and not "line power".  Maybe:
>   - battery-power
>   - mains-power (or line-power)

I've heard it called that as well; I think this is an English verus
American thing, and I'm not sure there's a good answer :-/

>I've not got anything that does apm stuff, but is there the concept of
>something that gets called when battery power is low?  Then we could
>have a "battery-low" script (with a corresponding "battery-ok" script??)
>as well.

There _is_ a battery low indicator, but not all versions of the APM
BIOS seem to indicate this (my laptop does, for example - you just get
a percentage).  It would certainly be possible to run a script on
either "battery low" or a battery charge below a certain percentage.

>Also, are the path names to the scripts configurable (either by
>environment variables or a config file)?

No, but then neither are any of the other scripts in apmd either :-)

--Ken