m.dem.extreact

[nps!susan at cerl.cecer.army.mil]

In answer to :

>  The documentation for m.dem.extract assumes input from a tape drive.  Can the
>  input param also point to a disc file?

Yes - the input param can point to a disk file although blocksize can get
tricky if you try to play with it.  If you dd the dem data file from tape 
to disk keeping the blocksize constant then use that same blocksize on your
m.dem.extract command line, you should be OK.

Susan