[GRASSLIST:5465] Auto correct topology in vector file?

[John Gillette]

 Hello

I have a USGS DLG vector map imported from sdts.
There are lakes in the middle with streams that 
come out and intersect the bounding box. When I
delete the bounding box using v.digit and run 
v.support, I get "warnings":

Unclosed area, free end or edge inside area: line 245
...

I thought this is due to the fact that the lines (streams)
going to the edge are of type AREA and form an area with the 
boundary line (which is now deleted). Now I'm not sure.

Are the line numbers reported in the error message above
the category numbers or the Grass internal offset number
(as in Map.Line[i]).  

Is there a way to fix this automatically without having to 
manually retype (change from AREA to LINE) all the offending
lines?

OR

Is there an easier way to get rid of the bounding box so 
I can merge several of these files?

John