Any ideas on why I am getting this result? I am running the current version of 
j807 but this seems to be the same all the way back to J701, which makes me 
think that there is something that I am missing in the way that rank is applied.

    a
0 1 2
3 4 5 
    1 2 x:"0 _   a NB. this is expected
0 1 2
3 4 5
0 0 0

0 0 0
0 0 0
0 0 0


0 1 0
1 1 0
2 1 0

3 1 0
4 1 0
5 1 0
   1 2 x:"0    a  NB. this is was unexpected. Shouldn't it be the same as the 
result of 1 2 x:"0 _   a
0 0
1 0
2 0

3 1
4 1
5 1
   2 x:"0    a  NB. the constituent parts behave as expected with rank 0
0 1
1 1
2 1

3 1
4 1
5 1
   1 x:"0    a
0 1 2
3 4 5

Cheers, bob
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