[GRASS5] gis.m does not use whole area

[Hamish]

> > This has been a confusing part of GRASS for a Long long time.
>
> I'll see what's possible. I guess I'm not all that confused. What is
> blank white is not in the map.

It isn't a problem when you are dealing with imagery data that covers
the full region, then it's pretty clear. When you are working with
isolated vectors or raster data as islands-in-the-NULL, then it isn't
always clear why the blob or line stops an inch from the edge of the
pane. Any edge-of-the-world hint need not be obtrusive, 10% alpha on
white background might be just enough .. This is especially a pain when
doing something interactive, e.g. historically with v.digit.


Hamish