>
>  [ George,
.......
>  [ Unfortunately I found that its easy to end up with more data structure
>  [ "overhead" than actual data, and running under DOS thats a disaster.
>  [ Perhaps paging portions of the tree out to disk might help.
>  [

That's why I switched to the GNU compiler.   Actually, the package is called
"DJGPP" on the InfoMagik disk.  All programs use a parent process called
"go32" that effectively allows all programs to run with all memory available,
and then pages out to \TMP when it runs out.   So I don't have to worry about
data structure overhead.

All this on DOS.    And all for $20.

GB