a grid written as the following:
hden vary
grid 5 3 1
stopped in the parser with the error that the increment (1) is greater than the different in the limits. Added fabs to difference to this test now works.
the grid does work, although it does not come out in the expected 5, 4, 3 order. also tested 2d form and this also works, but with parameters sorted into increasing order even when written in decreasing order as above.
this situation is better than it was but perhaps not optical - is anything conceptually wrong with a decreasing loop?