space between equations in mathalignment

space between equations in mathalignment

[massifr]

Hello list,
is there a way to modify the space between equations in mathalignment?
Something like \TB in tabulate would be great.
In tabulate, \TB[-3mm] i.e. lets you shrink the vertical space between two rows.

Aditya spoke about that here:
http://www.mail-archive.com/ntg-context%40ntg.nl/msg34316.html
and the answer seems to be "no".

Working example:
\starttext
\startformula
  \startmathalignment[n=1]
    \NC v = u + at, \NR[+]
    \NC d = ut + \frac{1}{2} at^2. \NR[+]
  \stopmathalignment
\stopformula
\stoptext

Not working example (what I'd like)
\starttext
\startformula
  \startmathalignment[n=1]
    \NC v = u + at, \NR[+]
    \TB
    \NC d = ut + \frac{1}{2} at^2. \NR[+]
  \stopmathalignment
\stopformula
\stoptext

I've looked at math-ali.mkiv for a place to "inject" a \blank to modify 
the vertical space between rows. 
Is \math_alignment_NR_indeed the right place?

Thanks,
Massi
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